This is a list of all familial relations in professional sports.
| Parent | Children | Sport(s) | Country of origin |
|---|
| Cor van Aanholt | Philipine van Aanholt, Odile van Aanholt | Sailing |
|
| Mary Abbott | Margaret Abbott | Golf | |
| Hifumi Abe, Uta Abe | Judo | |
| Valerie Adams, Steven Adams | Shot put / Basketball | |
| Cláudio Adão | Felipe Adão | Association football | |
| Marija Agbaba, Jelena Agbaba | Handball | |
| Óscar Aguirregaray | Matías Aguirregaray | Association football | |
| Ahn Jae-hyung, Jiao Zhimin | An Byeong-hun | Table tennis, Golf | |
| Veronika Aigner, Barbara Aigner, Johannes Aigner | Para-alpine skiing | |
| Julian Alaphilippe, Bryan Alaphilippe | Cycle sport | |
| Kevin Alas, Junjun Alas | | |
| Nigel Albon | Alexander Albon | Auto racing |
|
| Virgilijus Alekna | Mykolas Alekna | Discus throw | |
| Svetlana Alekseeva | Elena Kustarova | Figure skating | |
| Anna-Maria Alexandri, Eirini-Marina Alexandri, Vasiliki Alexandri (triplets) | Synchronised swimming | |
| Muhammad Ali, Rahaman Ali | Boxing | |
| Muhammad Ali | Laila Ali | Boxing | |
| Joe Allen (great-grandfather) Bobby Allen (grandfather) | Jacob Allen (father) Logan Schuchart. (grandfather) | Auto racing | |
| Bobby Allison | Davey Allison, Clifford Allison | Stock car racing | |
| Jen Allred | Shayna Powless, Neilson Powless | Long-distance running
Cycle sport | |
| Periko Alonso | Xabi Alonso, Mikel Alonso | Association football | |
| Luc Alphand | Estelle Alphand | Alpine skiing |
|
| Hamit Altıntop, Halil Altıntop | Association football | |
| Pedro Amat Fontanals (in Spanish), Jaime Amat Fontanals (in Spanish), Francisco Amat Fontanals (in Spanish), Juan Amat Fontanals (in Spanish) | Field hockey | |
| Jaime Amat Fontanals (in Spanish) | Santi Amat, Santi Freixa (cousin) | Field hockey | |
| Francisco Amat Fontanals (in Spanish) | Pol Amat, Santi Freixa (cousin) | Field hockey | |
| Al-Farouq Aminu, Alade Aminu | Basketball |
|
| Lala Amarnath | Mohinder Amarnath, Surinder Amarnath, Rajinder Amarnath | Cricket | |
| Anand Amritraj, Vijay Amritraj | Tennis | |
| Anand Amritraj | Stephen Amritraj | Tennis |
|
| Vijay Amritraj | Prakash Amritraj | Tennis | |
| Kwame Ampadu | Ethan Ampadu | Association football |
|
| Ivica Ančić, Mario Ančić, Sanja Ančić | Tennis | |
| Asbjørn Kragh Andersen, Søren Kragh Andersen | Cycle sport | |
| Dennis Anderson | Adam Anderson, Ryan Anderson, Krysten Anderson | Monster truck | |
| Roy Andersson | Patrik Andersson, Daniel Andersson | Association football | |
| Erika Andreeva, Mirra Andreeva | Tennis | |
| Andretti family | | Auto racing |
|
| Jon Andrews | Ellesse Andrews | Track cycling | |
| Jesús Angoy | Jesjua Angoy-Cruyff | Association football / American football | |
| Vyacheslav Anisin Irina Cherniaeva | Marina Anissina, Mikhail Anisin | Ice hockey / Figure skating | |
| Anoaʻi family | | Professional wrestling |
|
| Faisal Antar, Roda Antar | Association football | |
| Giannis Antetokounmpo, Thanasis Antetokounmpo, Kostas Antetokounmpo, Alex Antetokounmpo | Basketball | |
| Aiva Aparjode | Kristers Aparjods, Kendija Aparjode | Luge | |
| | | / |
| Franjo Arapović | Marko Arapović | Basketball | |
| Hasson Arbubakrr | Hassan Whiteside | American football / Basketball | |
| Joaquín Arcega, José Arcega, Fernando Arcega | Basketball | |
| J. J. Arcega-Whiteside | Basketball, American football | |
| John Archibald, Katie Archibald | Cycle sport | |
| Mai Asada, Mao Asada | Figure skating | |
| Antonio Ascari | Alberto Ascari | Motorsport | |
| Lisa Ashton | Danielle Ashton | Darts | |
| Dan Atherton, Gee Atherton, Rachel Atherton | Cycle sport, Downhill mountain biking | |
| Pierre Aubameyang | Catilina Aubameyang, Willy Aubameyang, Pierre-Emerick Aubameyang | Association football |
|
| Ronald Van Avermaet | Greg Van Avermaet | Road bicycle racing | |
| Albert Azaryan | Eduard Azaryan | Gymnastics |
 Armenia |
| Abedi Pele | André Ayew, Jordan Ayew, Ibrahim Ayew | Association football | |
Magnus Bäckstedt
Megan Hughes | Elynor Bäckstedt, Zoe Bäckstedt | Cycle sport |
|
| Gustavo Badell | Yamila Badell | Association football | |
| Jean-Claude Bagot | Yoann Bagot | Cycle sport | |
| David Bairstow | Jonny Bairstow | Cricket | |
| John Baldwin Sr. | John Baldwin, Don Baldwin, Donna Baldwin | Figure skating | |
| Mosab Balhous, Anas Balhous | Association football | |
| Lonzo, LiAngelo, and LaMelo Ball | Basketball |  United States |
| Sergei Baltacha | Sergei Baltacha Jr., Elena Baltacha | Association football
Tennis |
|
| Rubens Barrichello | Eduardo Barrichello | Motorsport | |
| Billy Bates | William Bates | Cricket/Association football |
|
| William Bates | Ted Bates | Cricket/Association football |
|
| Guin Batten, Miriam Batten | Rowing | |
| Rudy Barbier, Pierre Barbier | Cycle sport | |
| Franco Baresi, Giuseppe Baresi | Association football | |
| Giuseppe Baresi | Regina Baresi | Association football | |
| Hannah Barnes, Alice Barnes | Cycle sport | |
| Sid Barras | Tom Barras | Cycle sport | |
| Mutaz Essa Barshim, Muamer Aissa Barsham, Meshaal Barsham | Track and field, Association football | |
| Kane Barrett, Beauden Barrett, Scott Barrett, Jordie Barrett | Rugby union | |
| Rick Barry | Scooter, Jon, Brent and Drew Barry | Basketball | United States |
| Sally Barsosio, Florence Barsosio | Track and field |  Kenya |
| Karel Bártů | Jan Bártů | Modern pentathlon | |
| Bates Battaglia, Anthony Battaglia | Ice hockey | |
| Alex Baumann | Ashton Baumann | Swimming | |
| Alain Baxter, Noel Baxter | Alpine skiing | |
| Ryan Bayley, Kristine Bayley | Track cycling | |
| John Beattie | Johnnie Beattie | Rugby union |  United Kingdom |
| Bridget Becker, Scott Becker, Sean Becker | Curling |  New Zealand |
| Benoni Beheyt (grandfather) | Kurt Van Keirsbulck (father) | Road bicycle racing | |
| Kurt Van Keirsbulck (father) | Guillaume Van Keirsbulck (grandson) | Road bicycle racing | |
| Derek Bell | Justin Bell | Motor sport | |
| Martin Bell, Graham Bell | Alpine skiing | |
| Chantal Beltman, Ghita Beltman | Road bicycle racing | |
| Lars Bender, Sven Bender | Association football | |
| Winston Benjamin | Rai Benjamin | Cricket
Track and field |
|
| Nigel Benn | Conor Benn | Boxing | |
| Takumi Beppu, Fumiyuki Beppu | Road bicycle racing | |
| Aleksei Berezutski, Vasili Berezutski | Association football | |
| Arturo Bergamasco | Mauro Bergamasco, Mirco Bergamasco | Rugby union | |
| Lars Berger, Tora Berger | Biathlon, cross-country skiing | |
| Jean-François Bernard | Julien Bernard | Road bicycle racing | |
| Jean-René Bernaudeau | Giovanni Bernaudeau | Road bicycle racing | |
| Raimund Bethge, Bernhard Hochwald | Bobsleigh, shooting |
|
| Emmanuel Bett, Josphat Bett Kipkoech, David Kiprotich Bett[1] | Running | |
| Jim Bett | Baldur Bett, Calum Bett | Association football |
|
| Nicholas Bett, Aron Koech (twins) | Track and field | |
| Tony Bettenhausen | Gary Bettenhausen, Merle Bettenhausen, Tony Bettenhausen Jr. | Auto racing | |
| Volodymyr Bezsonov Viktoria Serkyh | Anna Bessonova | Association football / Rhythmic gymnastics |
|
| Henry Bibby, Jim Bibby | Basketball / Baseball | |
| Henry Bibby | Mike Bibby | Basketball | |
| Brad Binder, Darryn Binder | Motorcycle racing | |
| Ben and Tom Birchall | Sidecar racing | |
| Dag Bjørndalen, Ole Einar Bjørndalen | Biathlon, cross-country skiing | |
| Jo Inge Bjørnebye | Stig Inge Bjørnebye | Ski jumping / Association football | |
| Sadie Bjornsen, Erik Bjornsen | Cross-country skiing | |
| Aaron Black (son), Chris Tan (stepson) | |
|
| Danny Blanchflower. Jackie Blanchflower | Association football | |
| Lou Blaney (grandfather) | Dave Blaney (father), Dale Blaney (uncle) | Stock car racing / All Star Circuit of Champions | |
| Dave Blaney (father) | Ryan Blaney (grandson) | Stock car racing | |
| David Blatt | Tamir Blatt | Basketball |
|
| Michael Bleekemolen | Sebastiaan Bleekemolen, Jeroen Bleekemolen | Motor sport | |
| Danny Blind | Daley Blind | Association football | |
| Stig Blomqvist | Tom Blomqvist | Rallying / Motor racing |
|
| Richard Blood Sr., Victor Blood | Professional wrestling | |
| Richard Blood Sr. | Richard Blood Jr. | Professional wrestling | |
| Kevin-Prince Boateng, Jérôme Boateng | Association football |
|
| Tarjei Bø, Johannes Thingnes Bø | Biathlon | |
| Łukasz Bodnar, Maciej Bodnar | Road bicycle racing | |
| Frank de Boer, Ronald de Boer | Association football | |
| Håvard Bøkko, Hege Bøkko | Speed skating | |
| Valeria Bondarenko, Alona Bondarenko, Kateryna Bondarenko | Tennis | |
| Bobby Bonds | Barry Bonds | Baseball | |
| Ray Boone | Bob Boone | Baseball | United States |
| Bob Boone | Bret Boone, Aaron Boone | Baseball | United States |
| Ferdinando Longo Borghini, Guidina Dal Sasso | Paolo Longo Borghini, Elisa Longo Borghini | Cross-country skiing
Cycle sport | |
| Elisa Longo Borghini, Jacopo Mosca | | Cycle sport | |
| Jacques Borlée | Dylan Borlée, Kevin Borlée, Jonathan Borlée, Olivia Borlée | Track and field | |
| Dajana Bošković, Tijana Bošković | Volleyball |
|
| Patrick Bourdais | Sébastien Bourdais | Auto racing | |
| Jan Bos, Theo Bos | Speed skating and Road bicycle racing | |
| Mouhanad Boushi, Nihad Al Boushi | Association football | |
| Ian Botham | Liam Botham | Cricket, association football, rugby union, rugby league | United Kingdom |
| Nacer Bouhanni, Rayane Bouhanni | Cycle sport | ) |
| Jacky Boxberger | Ophélie Claude-Boxberger | Track and field | |
| Gillian Boxx, Shannon Boxx | Softball / Association football | United States |
Ray Boyd
Denise Robert Boyd | Alana Boyd | Track and field |  Australia |
| Cloyd Boyer, Ken Boyer, Clete Boyer | Baseball | United States |
| Jack Brabham | Geoff Brabham, Gary Brabham, David Brabham | Motor racing | |
| Geoff Brabham | Matthew Brabham | Motor racing |
|
| David Brabham, Lisa Thackwell | Sam Brabham | Motor racing |
|
| Bob Bradley, Scott Bradley | Association football / Baseball | |
| Bob Bradley | Michael Bradley | Association football | |
| Abel Braga | Fábio Braga | Association football |
|
| Lisa Brambani | Abby-Mae Parkinson | Cycle sport | |
| Gjermund Bråten, Øystein Bråten | Snowboarding / Freestyle skiing | |
| Harald Brattbakk | Filip Brattbakk | Association football | |
| Ben Bright, Rowena Bright, Torah Bright | Snowboarding / Alpine skiing | |
Robbie Brightwell
Ann Packer | Ian Brightwell, David Brightwell | Track and field / Association football | United Kingdom |
| Chris Broad | Stuart Broad | Cricket | United Kingdom |
| Stuart Brown | Jake Brown | Sidecarcross | United Kingdom |
| Alistair Brownlee, Jonny Brownlee | Triathlon | United Kingdom |
| Mark Brownlee | Scott Brownlee | Rowing | New Zealand |
| Steve Bruce | Alex Bruce | Association football |
|
| Martin Brundle | Alex Brundle | Auto racing | United Kingdom |
| Martin Brundle, Robin Brundle | Auto racing | United Kingdom |
| Bryan brothers | Tennis | |
| Joe Bryant | Kobe Bryant | Basketball | United States |
| Sergey Bubka | Sergei Bubka | Track and field / Tennis |
|
| Jiří Bubla | Jiří Šlégr | Ice hockey | |
| Nicholas Buckland, Joseph Buckland | Figure skating | |
| Ion Bucșa | Cristina Bucșa | Biathlon / Tennis |
|
| Andrei Bukin, Elena Vasiuk | Ivan Bukin | Ice dancing | |
| Alex Bunbury | Teal Bunbury | Association football |
|
| Vladimir Bure | Pavel Bure, Valeri Bure | Swimming
Ice hockey |
|
| Burge family | | Rugby union
Rugby league | Australia |
| Ilya Burov, Maxim Burov | Freestyle skiing | |
| Leroy Burrell, Dawn Burrell | Track and field | United States |
| Leroy Burrell, Michelle Finn-Burrell | Cameron Burrell, Joshua Burrell | Track and field | |
| Beryl Burton | Denise Burton | Cycle sport | |
| Jeff Burton | Harrison Burton | Stock car racing | |
| Maurice Burton | Germain Burton | Cycle sport | |
| Ward Burton | Jeb Burton | Stock car racing | |
| Jorge Burruchaga | Mauro Burruchaga, Román Burruchaga | Association football, Tennis | |
| Kamil Bury, Dominik Bury | Cross-country skiing | |
| Tom Busch | Kurt Busch, Kyle Busch | Stock car racing | |
| Carles Busquets | Sergio Busquets | Association football |  Spain |
| Vyacheslav Butsayev, Yuri Butsayev | Ice hockey | |
| John Button | Jenson Button | Rallycross / Auto racing | |
| Franky De Buyst (in Dutch) | Jasper De Buyst | Cycle sport | |
| | | |
| John H. Caldwell | Tim Caldwell, Sophie Caldwell | Cross-country skiing | United States |
| Cate Campbell, Bronte Campbell | Swimming | |
| Fabio Cannavaro, Paolo Cannavaro | Association football | |
| Isabella Cannuscio, Anastasia Cannuscio | Ice dancing | |
| Eric Cantona, Joel Cantona | Association football | |
| Peter Carruthers, Kitty Carruthers | Figure skating | |
| Mauro Caviezel, Gino Caviezel | Alpine skiing | |
| Cha Bum-kun | Cha Du-ri | Association football |
|
| Giorgio Cagnotto, Carmen Casteiner | Tania Cagnotto | Diving | |
| Daniela Ceccarelli | Lara Colturi | Alpine skiing |
|
| Johnny Cecotto | Johnny Cecotto Jr. | Auto racing | |
| Francisco Cerúndolo, Constanza Cerundolo, Juan Manuel Cerúndolo | Tennis
Field Hockey | |
| Richard Coffey | Amir Coffey, Nia Coffey | Basketball | |
| Ray Chadwick | Sydney Leroux | Baseball
Association football |
|
| Brett Chalmers | Kyle Chalmers | Australian rules football
Swimming | |
| Richard Chambers, Peter Chambers | Rowing | |
| Gurwinder Singh Chandi | Manjeet Kaur | Field hockey / Athletics | |
| Vicky Chandhok | Karun Chandhok | Motorsport | |
| Ian Chappell, Greg Chappell, Trevor Chappell | Cricket | |
| John Charles, Mel Charles | Association football | |
| Mel Charles | | Association football | |
| Ruperta Charles | Kaila Charles, Afia Charles | Athletics / Basketball / Athletics | / / |
| Sylvain Chavanel, Sébastien Chavanel | Road bicycle racing | |
| Eddie Cheever, Ross Cheever | Auto sport | |
| Eddie Cheever | Eddie Cheever III | Auto sport |
|
| Robert Chemonges, Victor Kiplangat, Jacob Kiplimo, Oscar Chelimo | Long-distance running | |
| Mercy Cherono, Caroline Chepkoech Kipkirui | Long-distance running | |
| Dmitri Cheryshev | Denis Cheryshev | Association football |
|
| Peter Chiarelli | Talia Chiarelli | Ice hockey / Gymnastics |  Canada |
| Enrico Chiesa | Federico Chiesa | Association football | |
| Tom Chilton, Max Chilton | Motorsport | |
| Mark Christian, Anna Christian | Cycle sport | |
| Daniele Cinciarini (in Italian), Andrea Cinciarini | Basketball | |
| Paul Clarke, Steve Clarke | Association football | |
| Cesare Cipollini, Mario Cipollini | Road bicycle racing |  Italy |
| Libby Clegg, James Clegg, Stephen Clegg | Para-sport | |
| Ray Clemence | Stephen Clemence | Association football | |
| Lei Clijsters | Kim Clijsters, Elke Clijsters | Association football / Tennis |  Belgium |
| Stefano Cobolli | Flavio Cobolli | Tennis | |
| Skiing Cochrans | | Alpine skiing | |
| Barbara Cochran | Ryan Cochran-Siegle | Alpine skiing | |
| Lindy Cochran | Tim Kelley, Robby Kelley | Alpine skiing | |
| Jerry Codinera, Harmon Codinera & Pat Codinera | | |
Peter McColgan,
Liz McColgan (divorced) | Eilish McColgan | Track and field | (
) |
| Andy Cole | Devante Cole | Association football | |
| Joe P. Coleman | Joe H. Coleman | Baseball | United States |
| Joe H. Coleman | Casey Coleman | Baseball | United States |
| Rob Collard | Ricky Collard, Jordan Collard | Auto racing | United Kingdom |
| Stefano Coletti, Alexandra Coletti | Auto racing / Alpine skiing | |
| Luís Pérez Companc, Pablo Pérez Companc | | |
| Sérgio Marceneiro da Conceição | Sérgio Fernandes da Conceição, Rodrigo Conceição, Francisco Conceição | Association football | |
| Simone Consonni, Chiara Consonni | Cycle sport | |
| Charles Coody (grandfather) | Parker Coody, Pierceson Coody (twin grandsons) | Golf | |
| Amber Cope, Angela Ruch | Stock car racing | |
| Katherine Copely, Dean Copely | Ice dancing | |
| Fausto Coppi, Serse Coppi | Cycle sport | |
| Tim Coronel, Tom Coronel | Motorsport | |
| Gabriel Correa | Yannel Correa | Association football |
|
| | Association football / Volleyball | Belgium |
| Dwayne Cowan[2] | Track and field | |
| Claire Michel | Swimming / Triathlon | |
| Matthew Crampton, Jessica Crampton | Track cycling | |
| Chandra Crawford, Rosanna Crawford | Cross-country skiing / Biathlon | |
| Johan Cruyff | Jordi Cruyff | Association football | |
| László Cseh Sr. | László Cseh | Swimming | |
| Fabio Cudicini | Carlo Cudicini | Association football | |
| Marko Ćuk, Miloš Ćuk | Water polo | |
| Randall Cunningham | Randall Cunningham II,
Vashti Cunningham | American football
Track and field | |
| Dell Curry | Stephen Curry, Seth Curry | Basketball | United States |
| Irene Curtoni, Elena Curtoni | Alpine skiing | |
| Michael Czyborra, Lennart Czyborra | Association football | |
| Hans Daams | Jessie Daams | Road bicycle racing |
|
| Derek Daly | Conor Daly | Auto racing |
|
| Nina Daniels, Lisa Daniels | Synchronised swimming | |
| Predrag Danilović | Olga Danilović | Basketball
Tennis |
|
| Pál Dárdai (grandfather) | Pál Dárdai (father) | Association football | |
| Pál Dárdai (father) | Palkó Dárdai, Márton Dárdai (grandson) | Association football |
/ |
| Nigel Davies | Sam Davies | Rugby union | |
| Billy Davies, John Davies | Association football | |
| Alex Davison, Will Davison | Auto racing | |
| Juan Carlos de Borbón, Sophia of Greece | Cristina de Borbón, Felipe de Borbón | Sailing |
|
| Julian de Guzman, Jonathan de Guzmán | Association football |
|
| Mekseb Debesay, Mossana Debesai | Cycle sport | |
| Brian Deegan | Hailie Deegan | Freestyle motocross
Auto racing | |
| Iván DeJesús | Iván DeJesús Jr. | Baseball |  Puerto Rico |
| Erik Dekker | David Dekker | Cycle sport | |
| Jean-Denis Delétraz | Louis Delétraz | Motorsport | |
| Walter Delle Karth, Werner Delle Karth | Bobsleigh | |
| Werner Delle Karth | Nico Delle Karth | Bobsleigh, Sailing | |
| Véronique Delobel, Isabelle Delobel | Ice dancing | |
| Grégoire De Mévius | Guillaume De Mévius | Rallying | |
Phil Dent,
Betty Ann Grubb Stuart | Brett Hansen-Dent (step-son), Taylor Dent | Tennis | Australia
United States |
| Laurens De Plus, Jasper De Plus | Cycle sport | |
| , Marijke Lammens | Nina Derwael | Association football / Table tennis / Gymnastics | |
| Delino DeShields | Delino DeShields Jr.
Diamond DeShields | Baseball
Basketball | United States |
| Nate Diaz, Nick Diaz | Mixed martial arts | |
| Djalma Dias | Djalminha | Association football | |
| Ejegayehu Dibaba, Tirunesh Dibaba, Genzebe Dibaba | Track and field | |
| Peter Dibben, Jonathan Dibben | Cycle sport | |
| Michael DiBiase | Ted DiBiase | Professional wrestling | |
| Ted DiBiase | Ted DiBiase Jr., Mike DiBiase II, Brett DiBiase | Professional wrestling | |
| Manuela Di Centa, Giorgio Di Centa | Cross-country skiing | |
| Lucien Didier | Laurent Didier | Road bicycle racing | |
| Jeremy Dier | Eric Dier | Tennis
Association football | |
| Mick van Dijke, Tim van Dijke | Cycle sport | |
| Adnan Dirjal | Muhannad Darjal | Association football | |
| Jean Djorkaeff | Youri Djorkaeff | Association football | |
| William Dod, Lottie Dod | Archery | |
| Reginald Doherty, Laurence Doherty | Tennis | |
| José Dolhem, Didier Pironi | Auto racing | |
| Tie Domi | Max Domi | Ice hockey | |
| Mick Doohan | Jack Doohan | Motorcycle racing, Auto racing | |
| Pat Doran | Liam Doran | Rallycross | |
| Pierre-Antoine Dossevi | Thomas Dossevi, Mathieu Dossevi | Association football |
|
| David Downey | Ray Downey | Boxing | |
| Phil Dowsett | Alex Dowsett | Motorsport, cycle sport | |
| Goran Dragić, Zoran Dragić | Basketball | |
| Dick Dreissigacker, Pete Dreissigacker | Rowing | |
| Dick Dreissigacker, Judy Geer | Hannah Dreissigacker, Emily Dreissigacker | Rowing, biathlon, cross-country skiing | |
| Kelly Druyts, Gerry Druyts, Demmy Druyts, Jessy Druyts, Lenny Druyts | Cycle sport | |
| Douglas Dryburgh, James Dryburgh | Curling | |
| Paul Duchesnay, Isabelle Duchesnay | Ice dancing |
|
| Maxime Dufour-Lapointe, Chloé Dufour-Lapointe, Justine Dufour-Lapointe | Freestyle skiing moguls | |
| Denise Dupont, Madeleine Dupont, Oliver Dupont | Curling | |
| Dainis Dukurs | Tomass Dukurs, Martins Dukurs | Skeleton | |
| Greg Duplantis, Helena Hedlund | Andreas Duplantis, Antoine Duplantis, Armand Duplantis, Johanna Duplantis | Pole vault / Track and field / Baseball |
|
| Jason Dungjen, Susan Dungjen | Figure skating | |
| Joey Dunlop, Robert Dunlop | Motorcycle Racing | |
| Robert Dunlop | William Dunlop, Michael Dunlop | Motorcycle Racing | |
| Conor Dunne, Katy Dunne | Road bicycle racing / Tennis |
|
| Peter Dürr | Lena Dürr | Alpine skiing | |
| Hollie Dykes, Lyndon Dykes | Artistic gymnastics, association football |
|
| Ralph Earnhardt | Dale Earnhardt | Auto racing | |
| Dale Earnhardt | Dale Earnhardt Jr., Kerry Earnhardt | Auto racing | |
| Kerry Earnhardt | Jeffrey Earnhardt, Bobby Earnhardt | Auto racing | |
| Guy East, Andrew East | Track cycling
American football | |
| Tobias Eberhard, Julian Eberhard | Biathlon | |
| Stian Eckhoff, Tiril Eckhoff | Biathlon | |
| Alfred Eder | Simon Eder | Biathlon | |
| Sylvia Eder, Elfi Eder | Alpine skiing | |
| Annette Edmondson, Alex Edmondson | Cycle sport | |
| Vilhjálmur Einarsson | Einar Vilhjálmsson | Track and field | |
| Attila Elek, György Elek | Ice dancing | |
| Mark Ella, Glen Ella, Gary Ella, Marcia Ella | Rugby union | |
| Bill Elliott | Chase Elliott | Stock car racing | |
| Dean Ellison, James Ellison | Motorcycle racing | |
| Yehia Emam and Hamada Emam | Hazem Emam | Association football | |
| Yves Ehrlacher, Cathy Muller | Yann Ehrlacher | Association football, motorsport | |
| Juvenal Edjogo-Owono, Alberto Edjogo-Owono | Association football |
|
| Vicente Engonga, Óscar Engonga | Association football | |
| Óscar Engonga | Igor Engonga | Association football |
|
| Juan Epitié, Rubén Epitié | Association football |
|
| Christian Eriksen, Louise Eriksen | Association football | |
| Philippe Ermenault | Corentin Ermenault | Cycle sport | |
| Sergio Escudero | Sergio Escudero | Association football |
|
| Aleix Espargaró, Pol Espargaró | Motorcycle racing | |
| Daniel Esposito | Chloe Esposito, Max Esposito | Modern pentathlon | |
| Henri Estanguet | Patrice Estanguet, Tony Estanguet | Canoe slalom | |
| Jonny Evans, Corry Evans | Association football | |
| Fred Evans, Aja Evans | American football / Bobsleigh | |
| Gwyndaf Evans | Elfyn Evans | Rallying | |
| Ros Evans | Neah Evans | Fell running, orienteering, cross-country skiing, cycle sport | |
| Simon Evans, Mitch Evans | Motor racing | |
| Patrick Evenepoel | Remco Evenepoel | Cycle sport | |
| Patrick Ewing | Patrick Ewing Jr. | Basketball |
|
| Chris Eubank | Chris Eubank Jr. | Boxing | |
| Cecil Exum | Dante Exum | Basketball |
|
| Oddmar Færø (grandfather) | Odmar Færø (father) | Association football | |
| Odmar Færø (father) | Odmar Færø (grandson) | Association football | |
| Teo Fabi, Corrado Fabi | Motorsport | |
| Wagnney Fabiano, Leonardo Santos | Mixed martial arts | |
| Steve Fairbairn | Ian Fairbairn | Rowing |
United Kingdom |
| Miguel Ángel Falasca, Guillermo Falasca | Volleyball |
|
| Esquiva Falcão, Yamaguchi Falcão | Boxing | |
| Kuli Faletau | Taulupe Faletau | Rugby union |
|
| Elena Fanchini, Nadia Fanchini, Sabrina Fanchini | Alpine skiing | |
| Fandi Ahmad | Irfan Fandi, Ikhsan Fandi, Ilhan Fandi | Association football | |
| Romy Farah, Robert Farah | Tennis | |
| Duarte Félix da Costa, António Félix da Costa | Auto racing | |
| Wes Felix, Allyson Felix | Sprinting | |
| Josef Fendt, Andrea Fendt | Luge | |
| Jorge Fernandez | Leylah Fernandez | Association football
Tennis |
|
| Rio Ferdinand, Anton Ferdinand | Association football | |
| Bia Feres, Branca Feres | Synchronized swimming | |
| Alex Ferguson | Darren Ferguson | Association football | |
| Derek Ferguson, Barry Ferguson | Association football | |
| Barry Ferguson | Kyle Ferguson | Association football | |
| Derek Ferguson | Lewis Ferguson | Association football | |
| Francisco Fernández Ochoa, Blanca Fernández Ochoa | Alpine skiing | ) |
| Sepp Ferstl | Josef Ferstl | Alpine skiing | |
| Vasily Georgiyevich Fesikov | Sergey Fesikov | Volleyball
Swimming | |
| Monika Feuersinger (in German) | Therese Feuersinger (in German) | Triathlon | |
| Paulína Fialková, Ivona Fialková | Biathlon | |
| Giovanni Fidanza | Arianna Fidanza, Martina Fidanza | Cycle sport | |
| Tonga Fifita | Tevita Fifita, Alipate Leone | Professional wrestling |
|
| Jaime Fillol, Álvaro Fillol | Tennis | |
| Jaime Fillol | Jaime Fillol Jr. | Tennis | |
| Ralph Firman, Natasha Firman | Motorsport |
|
| Hans Peter Fischnaller, Dominik Fischnaller | Luge | |
| Alastair Fisher | Colin Fisher | Rugby union | |
| Niamh Fisher-Black, Finn Fisher-Black | Cycle sport | |
| Wilson Fittipaldi Júnior, Emerson Fittipaldi | Auto racing | |
| Wilson Fittipaldi Júnior | Christian Fittipaldi | Auto racing | |
| Pietro Fittipaldi, Enzo Fittipaldi | Auto racing | |
| Bryan Fletcher, Taylor Fletcher | Nordic combined | |
| Richard Fliehr | David Fliehr, Ashley Fliehr, Reid Fliehr | Professional wrestling | |
| Jostein Flo, Jarle Flo, Tore André Flo | Association football | |
| Lukas Flückiger, Mathias Flückiger | Mountain bike racing | |
| Simon Fourcade, Martin Fourcade | Biathlon, cross-country skiing | |
| Dario Franchitti, Marino Franchitti | Auto racing | |
| Don Fraser, Candace Jones | Mat Fraser | Figure skating
CrossFit |
|
| Sunil Gavaskar | Rohan Gavaskar | Cricket | |
| Patrick Frary | Roy Bevis | Professional wrestling | |
Patrick Frary
Julia Hamer | Saraya Bevis, Zak Frary | Professional wrestling | |
| Mario Frick | Yanik Frick | Association football | |
| Alejandro Foglia, Andrea Foglia | Sailing | |
| John Force | Ashley Force Hood, Brittany Force, Courtney Force | Drag racing | |
| George Foreman | George Foreman III | Boxing | |
| Pablo Forlán | Diego Forlán | Association football | |
| Richard Fox, Rachel Crosbee | Canoe slalom | |
| Richard Fox, Myriam Fox-Jerusalmi | Jessica Fox, Noemie Fox | Canoe slalom |
|
| Bill France Sr. | Bill France Jr., Jim France | Auto racing | United States |
| Bill France Jr. | Brian France, Lesa France Kennedy | Auto racing | United States |
| Joe Frazier | Jackie Frazier-Lyde | Boxing | |
| Uwe Freimuth, Jörg Freimuth | Track and field | |
| Uwe Freimuth | Rico Freimuth | Track and field |
|
| Peter Frischknecht (in French) (grandfather) | Thomas Frischknecht (in French) (father) | Cycle sport | |
| Thomas Frischknecht (in French) (father) | Andri Frischknecht (in French) (grandson) | Mountain bike racing | |
Guy Fritz
Kathy May | Taylor Fritz | Tennis | |
| Christof Frommelt | Willi Frommelt, Paul Frommelt | Cross-country skiing
Alpine skiing | |
| Lado Fumic (in German), Manuel Fumic | Mountain bike racing | |
| Gabre Gabric | Eddy Ottoz | Track and field |
|
| Tonči Gabrić | Drago Gabrić, Paškvalina Gabrić | Association football | |
| Marcelo Gallardo | Nahuel Gallardo | Association football | |
| Vittorio Gallinari | Danilo Gallinari | Basketball | |
| Alain Gallopin (in French), Joel Gallopin, Guy Gallopin | Cycle sport | |
| Joel Gallopin | Tony Gallopin | Cycle sport | |
| Bebeto (José Roberto Gama de Oliveira) | Mattheus | Association football | |
| Marco Ganna | Filippo Ganna | Canoe sprint
Cycle sport | |
| Wayne Gardner | Remy Gardner | Motorcycle racing | |
| Lucy Garner, Grace Garner | Road bicycle racing | |
| Agnieszka Gąsienica-Daniel, Maryna Gąsienica-Daniel | Alpine skiing | |
| Helena Gąsienica Daniel, Maria Gąsienica Daniel-Szatkowska | Cross-country skiing, alpine skiing | |
| Pau Gasol, Marc Gasol | Basketball | |
| Selina Gasparin, Elisa Gasparin, Aita Gasparin | Biathlon | |
| Sebastiano Gastaldi, Nicol Gastaldi | Alpine skiing | |
| Elene Gedevanishvili, Dimitri Gedevanishvili | Figure skating
Alpine skiing | |
| Judy Geer, Charlotte Geer | Rowing | |
| Archie Gemmill | Scot Gemmill | Association football | |
| Jordi Gené, Marc Gené | Auto racing | |
| Riccardo De Gennaro, Giovanni De Gennaro | Canoe slalom | |
| Ferdinando Gentile | Alessandro Gentile, Stefano Gentile | Basketball | |
| Francisco Gento, Julio Gento (in Spanish), Antonio Gento (in Spanish) | Association football | |
| Aladár Gerevich | Pál Gerevich | Fencing |  Hungary |
| Abdelkader Ghezzal, Rachid Ghezzal | Association football | |
| Philippe Gilbert, Jérôme Gilbert | Cycle sport | |
| Maurice Gillen | Lucien Gillen | Cycle sport | |
| Todd Gilles, Piper Gilles, Alexe Gilles | Ice dancing | |
| David Gillow | Shara Gillow | Cycle sport |
|
| Graeme Gilmore | Matthew Gilmore | Cycle sport |
|
| Néstor Girolami, Franco Girolami | Motorsport | |
| Dominique Gisin, Marc Gisin, Michelle Gisin | Alpine skiing | |
| Ilja Glebov, Jelena Glebova | Figure skating | |
| Gerhard Gleirscher | David Gleirscher, Nico Gleirscher | Luge | |
| Mario Götze, Fabian Götze, Felix Götze | Association football | |
| Francesc Godoy, Anna Godoy | Triathlon | |
| Christine Goitschel, Marielle Goitschel | Alpine skiing | |
| Carly Gold, Gracie Gold | Figure skating | |
| Taylor Gold, Arielle Gold | Snowboarding Half-pipe | |
| Gil Gomes | Angel Gomes | Association football |
|
| Andrés Gómez | Emilio Gómez | Tennis | |
| Héctor González (El Turbo), Raúl González Guzmán (El Pollo) | Association football | |
| Pullela Gopichand | PVV Lakshmi | Badminton | |
| Tom "Flash" Gordon | Dee Gordon | Baseball | |
| Alexei Gorshkov | Anastasia Gorshkova | Ice dancing | |
| Jean-Marc Gounon | Jules Gounon | Motor racing | |
| Christian Gourcuff | Yoann Gourcuff | Association football | |
| Grace family | | Cricket | United Kingdom |
| Gracie family | Scores of family members, spanning four generations in competitive martial arts | Brazilian jiu-jitsu / Mixed martial arts |
|
| Torben Grael, Lars Grael | Sailing | |
| Torben Grael | Marco Grael, Martine Grael | Sailing | |
| François-Cyrille Grange, Jean-Baptiste Grange | Alpine skiing | |
| Marcel Granollers, Gerard Granollers | Tennis | |
| Horace Grant, Harvey Grant | Basketball | United States |
| Logan Gray, Lauren Gray | Curling | |
| Dick Greenwood | Will Greenwood | Rugby union | United Kingdom |
| Ken Griffey Sr. | Ken Griffey Jr. | Baseball | |
| Reinier Groenendaal | Richard Groenendaal | Cyclo-cross | |
| Marcus Grönholm | Niclas Grönholm | Rallying | |
| Jannie de Groot, Daan de Groot | Swimming / Cycle sport | |
| Christine von Grünigen, Michael von Grünigen | | |
| Michael von Grünigen | Noel von Grünigen | | |
| Nebojša Gudelj | Nemanja Gudelj, Dragiša Gudelj | Association football |
|
| Domingos da Guia | Ademir da Guia | Association football | |
| Matt Guokas Sr. | | Basketball | United States |
| Arnór Guðjohnsen | Eiður Guðjohnsen | Association football | |
| Guerrero family | | Professional wrestling |
|
| Ruud Gullit | Maxim Gullit | Association football | |
| Lourdes Gourriel | Yuli Gurriel, Lourdes Gurriel Jr. | Baseball | |
| Sondre Guttormsen, Simen Guttormsen | Pole vault | |
| Alfie Haaland | Erling Haaland | Association football | |
| Rudy Hackett | Daniel Hackett | Basketball |
|
| Juan José Haedo, Lucas Sebastián Haedo | Road bicycle racing | |
| Andreas Hagara, Roman Hagara | Sailing | |
| Bella van der Spiegel-Hage, Keetie van Oosten-Hage, Heleen Hage | Road bicycle racing | |
| Gheorge Hagi | Ianis Hagi | Association football | |
| Sam Hairston | Jerry Hairston Sr., Johnny Hairston | Baseball | United States |
| Jerry Hairston Sr. | Jerry Hairston Jr., Scott Hairston | Baseball | United States |
| Sejad Halilović | Alen Halilović | Association football |
|
| Charles Hamelin, François Hamelin | Short track speed skating | |
| Lewis Hamilton, Nicolas Hamilton | Auto racing | |
| Matt Hamilton, Becca Hamilton | Curling | |
| Quinn Hughes, Jack Hughes, Luke Hughes | Ice hockey | |
| Katsuji Hanada, Mitsuru Hanada | Sumo | |
| Mitsuru Hanada | Masaru Hanada, Kōji Hanada | Sumo | |
| Michael Hannah, Tracey Hannah | Downhill mountain biking | |
| John Hansen, Alan Hansen | Association football | |
| Kenneth Hansen Susann Hansen (née Bergvall) | Timmy Hansen, Kevin Hansen | Rallycross | |
| Lasse Norman Hansen, Louise Hansen | Cycle sport | |
| Louise Hansson, Sophie Hansson | Swimming | |
| Tim Hardaway | Tim Hardaway Jr. | Basketball | |
| Janette Hargin, Mattias Hargin | Alpine skiing | |
| Hart family | | Professional wrestling |
|
| Robert Harting, Christoph Harting | Track and field | |
| Azat Harutyunyan, Vladimir Harutyunyan (twins) (in Italian) | Diving | |
| Ron Haslam | Leon Haslam | Motorcycle racing | |
| Don Hasselbeck | Matt Hasselbeck, Tim Hasselbeck | American football | United States |
| Tony Hateley | Mark Hateley | Association football | |
| Mark Hateley | Tom Hateley | Association football | |
| Dido Havenaar | Mike Havenaar, Nikki Havenaar | Association football |
|
| Derek Hawkins, Callum Hawkins | Distance Running | |
| Chuck Hay | David Hay, Mike Hay | Curling | |
| Eden Hazard, Thorgan Hazard, Kylian Hazard | Association football | |
| David Hearn, Cathy Hearn | Canoe slalom | |
| Traudl Hecher | Stephan Görgl, Elisabeth Görgl | Alpine skiing | |
| Eric Heiden, Beth Heiden | Speed skating, cycle sport, cross-country skiing | |
| Beth Heiden | Joanne Reid | Speed skating, cycle sport, cross-country skiing / Biathlon | |
| Nick Heidfeld, Sven Heidfeld | Auto racing | |
| Wolfgang Heinig Katrin Dörre-Heinig (in German) | Katharina Heinig (in German) | Running | |
| Carol Heiss, Nancy Heiss | Figure skating | |
| Michaela Hejnová, Zuzana Hejnová | Track and field | |
| Hendrick family | | Auto racing | |
| Jorik Hendrickx, Loena Hendrickx | Figure skating | |
| Larry Hennig | Curt Hennig | Professional wrestling | |
| Curt Hennig | Joe Hennig | Professional wrestling | |
| Javier Hernández Gutiérrez | Javier Hernández | Association football | |
| Willy Hernangómez, Juan Hernangómez | Basketball | |
| José Herrada, Jesús Herrada | Cycle sport | |
| Pedro María Herrera | Ander Herrera | Association football | |
| Bryan Herta | Colton Herta | Auto racing | |
| Louis Heusghem, Hector Heusghem | Road bicycle racing | |
| William Hickox, Laurie Hickox | Figure skating | United States |
| Luboš Hilgert (father), Štěpánka Hilgertová | Luboš Hilgert (son) Amálie Hilgertová (niece) | Canoe slalom | |
| | American football / Basketball | |
| Graham Hill (grandfather) | Damon Hill (father) | Auto racing | |
| Damon Hill (father) | Josh Hill (grandson) | Auto racing | |
| Osamu Higashio | Riko Higashio | Baseball / Golf | |
| Jorge Higuaín | Gonzalo Higuaín, Federico Higuaín | Association football |
|
| Sergio Hinestrosa, Ruslán Hinestrosa (cousin) | Association football / Basketball |  Equatorial Guinea |
| Maria Höfl-Riesch, Susanne Riesch | Alpine skiing | |
| Daniel Hoelgaard, Markus Hoelgaard | Cycle sport | |
| Erica Hooker, Bill Hooker | Steve Hooker | Track and field | |
| Gino Van Hooydonck (in Dutch), Edwig Van Hooydonck (uncle) | Nathan Van Hooydonck | Road bicycle racing | |
| Tito Horford | Al Horford, Jon Horford | Basketball |
|
| Stefanie Horn, Jacqueline Horn | Canoe slalom |
|
| Jill Horstead | Brooke McIntosh, Summer McIntosh | Swimming, Figure skating | |
| Adri van Houwelingen, Jan van Houwelingen | Road bicycle racing | |
| Gordie Howe | Mark Howe, Marty Howe | Ice hockey |
|
| Wendy Hoyte | Justin Hoyte, Gavin Hoyte | Track and field / Association football | United Kingdom |
| Keiffer Hubbell, Madison Hubbell | Ice dancing | |
| Norbert Huber, Günther Huber, Arnold Huber, Wilfried Huber | Bobsleigh, Luge | |
| Chris Hughton, Henry Hughton | Association football | |
| Chris Hughton | Cian Hughton | Association football | |
| Patrick Huisman, Duncan Huisman | Auto racing |  Netherlands |
| Stefan Hula Sr. | Stefan Hula Jr. | Ski jumping | |
| Bobby Hull | Brett Hull | Ice hockey | Canada
United States |
| Randy Hundley | Todd Hundley | Baseball | United States |
| James Hunt, David Hunt | Auto racing | |
| Noel Hunt, Stephen Hunt | Association football | |
| Patrick Hürlimann, Janet Hürlimann | Briar Hürlimann | Curling | |
| Daniele Hypólito, Diego Hypólito | Gymnastics | |
| Hur Jae | Heo Ung, Heo Hoon | Basketball | |
| Claudio Husaín, Darío Husaín | Association football | |
| Park Hyun-sun, Park Hyun-ha | Synchronised swimming | |
| Gianni Iapichino, Fiona May | Larissa Iapichino | Sport of athletics |
|
| Chiharu Icho, Kaori Icho | Wrestling | |
| Pascal Ickx, Jacky Ickx | Auto racing | |
| Jacky Ickx | Vanina Ickx | Auto racing | |
| Luka Ilić, Ivan Ilić | Association football | |
| Sean Ildefonso, Dave Ildefonso, Sofia Ildefonso | Basketball / Volleyball | |
| Paul Ince | Tom Ince | Association football | |
| Miguel Induráin, Prudencio Induráin | Road bicycle racing | |
| Gjert Ingebrigtsen (in Norwegian) | Kristoffer Ingebrigtsen, Martin Ingebrigtsen Henrik Ingebrigtsen, Filip Ingebrigtsen, Jakob Ingebrigtsen, Ingrid Ingebrigtsen | Middle-distance running | |
| Filippo Inzaghi, Simone Inzaghi | Association football | |
| Ted Irvine | Christopher Irvine | Ice hockey / Professional wrestling |
|
| Sadao Iwahira (grandfather) | , Minato Otami, Atsushi Onami | Sumo | |
| Gorka Izagirre, Ion Izagirre | Road bicycle racing | |
| William Jackson | Laurence Jackson | Curling | |
| Liv Jagge-Christiansen | Finn Christian Jagge | Alpine skiing | |
| LeBron James | Bronny James | Basketball | |
| Rachel James, Becky James | Cycle sport | |
| Reece James, Lauren James | Association football | |
| Jan Janků, Tomáš Janků | Track and field |  Czech Republic |
| Boban Janković | Vladimir Janković | Basketball |
|
| Britt Janyk, Michael Janyk | Alpine skiing | |
| Glenn Jarrett, Dale Jarrett | Auto racing | |
| Glenn Jarrett | Jason Jarrett | Auto racing | |
| Isgandar Javadov, Fizuli Javadov | Association football | |
| Fizuli Javadov | Vagif Javadov, | Association football | |
| Robert Jaworski | Robert Jaworski Jr. | Basketball | |
| Charles Jenkins Sr. | Charles "Chip" Jenkins | Track and field | United States |
| Hayes Alan Jenkins, David Jenkins | Figure skating | United States |
| Roland Jentsch, Christiane Jentsch | Daniela Jentsch, Analena Jentsch | Curling | |
| Aatef Jenyat, Amro Jenyat | Association football | |
| Pooh Jeter, Carmelita Jeter | Basketball
Track and field | |
| Leif Johansson | Joachim Johansson | Tennis | |
| Brandy Johnson | Sydney Johnson-Scharpf | Gymnastics | United States |
| Rocky Johnson | Dwayne Johnson | Professional wrestling | United States
|
| Dwayne Johnson | Simone Johnson | Professional wrestling | United States |
| Sammy Johnston, Allan Johnston | Association football | |
| Allan Johnston | Max Johnston | Association football | |
| Craig Joiner, Charline Joiner | Rugby union, cycle sport | |
| Natasha Jonas, Nikita Parris | Boxing, association football | |
| Stan Jones | Alan Jones | Auto racing | |
| Alan Jones | Christian Jones | Auto racing | |
| Alan Jones, Eifion Jones | Cricket | |
| Caldwell Jones, Charles Jones, Major Jones, Will Jones | Basketball | |
| Jon Jones, Arthur Jones, Chandler Jones | Mixed martial arts / American football | |
| Louise Jones | Hayley Jones | Cycle sport | |
| Popeye Jones | Seth Jones, Caleb Jones | Basketball / Ice hockey | |
| Michael Jordan | Jeffrey Jordan, Marcus Jordan | Basketball | |
| Mike Jordan | Andrew Jordan | Auto racing | |
| Ronald Joseph, Vivian Joseph | Figure skating | |
| Sarah Josephson, Karen Josephson | Synchronized swimming | |
| Al Joyner, Jackie Joyner-Kersee | Track and field | United States |
| Luis Juncos, Valentina Aracil | Natalie Juncos | Swimming
Association football |
|
| Marat Kabayev | Alina Kabaeva | Association football / Rhythmic gymnastics | |
| Kaká, Digão | Association football | |
| Anders Kallur | Susanna Kallur, Jenny Kallur | Ice hockey
Track and field | |
| Tadashige Kamakari | Yukio Naya, Kōnosuke Naya | Sumo
Professional wrestling | |
| Mujinga Kambundji, Ditaji Kambundji | Sprint (running) | |
| Vasily Karasev | Sergey Karasev | Basketball | |
| Ann-Marie Karlsson | Frida Karlsson | Cross-country skiing | |
| Dinesh Karthik | Dipika Pallikal Karthik | Cricket / Squash | |
| Rob Kearney, Dave Kearney | Rugby union | |
| Frederick Keeping | Michael Keeping | Cycle sport
Association football | |
| Erwin Keller | Carsten Keller, Andreas Keller | Field hockey |  Germany |
| Carsten Keller | Natascha Keller, Florian Keller | Field hockey | Germany |
Shannon Kelley
Mary Lou Retton | McKenna Kelley | American football / Gymnastics | United States |
| John B. Kelly Sr. | John B. Kelly Jr. | Rowing | United States |
| John B. Kelly Sr. (grandfather) | Albert Grimaldi (grandson), Caroline Grimaldi (granddaughter) | Rowing
Bobsleigh
Auto racing | United States
|
| Peter Kennaugh (cyclist father), Jackie Kennaugh (Time trial cycling mother) | Peter Kennaugh, Tim Kennaugh | Road bicycle racing | United Kingdom |
| Sinead Kerr, John Kerr | Figure skating | |
| Mohammad Khadem | Amir Reza Khadem, Rasoul Khadem | Wrestling | |
| Sami Khedira, Rani Khedira | Association football | |
| Kim Yeong-mi, Kim Kyeong-ae | Curling | |
| Steve Kinser, Randy Kinser | Kraig Kinser | Auto racing | |
| Erny Kirchen | Kim Kirchen | Cycle sport | |
| Emanuel Kišerlovski, Robert Kišerlovski | Road bicycle racing | |
| Bára Skaale Klakstein | Eyðvør Klakstein | Association football |  Faroe Islands |
| Vitali Klitschko, Wladimir Klitschko | Boxing | |
| Markis Kido, Bona Septano, Pia Zebadiah Bernadet | Badminton |  Indonesia |
| Dzintar Klavan | Ragnar Klavan | Association football |  Estonia |
| Kenneth Kluivert (grandfather) | Patrick Kluivert (father) | Association football |
|
| Patrick Kluivert (father) | Justin Kluivert (grandson) | Association football | |
| Servais Knaven, Natascha den Ouden | | Cycle sport | |
| Gerrie Knetemann | Roxane Knetemann | Road bicycle racing | |
| Junshirō Kobayashi, Ryoyu Kobayashi | Ski jumping | |
| Martin Koeman | Ronald Koeman, Erwin Koeman | Association football | |
| Elias Kolega, Samuel Kolega | Alpine skiing | |
| Arouna Koné, Bakari Koné | Association football | |
| Valery Konovalov (in Lithuanian), Laima Zilporytė | Ignatas Konovalovas | Cycle sport |
|
| Wolfgang Konrad | Patrick Konrad | Middle-distance running / Cycle sport | |
| John Konrads, Ilsa Konrads | Swimming | |
| Tomáš Kopecký, Matyáš Kopecký, Julia Kopecký | Cycle sport | |
Petr Korda
Regina Rajchrtová | Jessica Korda, Nelly Korda, Sebastian Korda | Tennis / Golf |
|
| Peoria Koshiba | Sydney Francisco | Sprint (running) | |
| Ante Kostelić | Ivica Kostelić, Janica Kostelić | Handball, alpine skiing | |
| Carolina Kostner, Simon Kostner | Figure skating
Ice hockey | |
| Jakub Kot, Maciej Kot | Ski jumping | |
| Niko Kovač, Robert Kovač | Association football | |
| Richard Krajicek, Michaëlla Krajicek | Tennis | |
| Zlatko Kranjčar | Niko Kranjčar | Association football | |
| Michel Kreder, Raymond Kreder | Road bicycle racing | |
| Roman Kreuziger Sr. | Roman Kreuziger | Road bicycle racing | |
| Alison Kreviazuk, Lynn Kreviazuk, Cheryl Kreviazuk | Curling | |
| Rúnar Kristinsson | Rúnar Alex Rúnarsson | Association football | |
| Tommy Kristoffersson | Johan Kristoffersson | Auto racing | |
| Zuzana Kučová, Kristína Kučová | Tennis | |
| Aleksey Kudryavtsev | Yana Kudryavtseva | Swimming / Gymnastics |
|
| Karin Künzle, Christian Künzle | Figure skating |  Switzerland |
| Anastasiya Kuzmina, Anton Shipulin | Biathlon |
|
| Abdul Kader Kardaghli, Ahmed Kurdughli | Association football | |
| Kazuhiro Kuroda | Hiroki Kuroda | Baseball | |
| Karen Kwan, Michelle Kwan | Figure skating | |
| Lee Labrada | Hunter Labrada | Bodybuilding | |
| Mathieu Ladagnous, Caroline Ladagnous | Cycle sport
Rugby union | |
| Jean-Philippe Lamoureux, Jacques Lamoureux, Mario Lamoureux, Jocelyne Lamoureux, Monique Lamoureux | Ice hockey | |
| Frank Lampard Sr. | Frank Lampard | Association football | |
| Santiago Lange | Yago Lange, Klaus Lange | Sailing | |
| Nicolás Lapentti, Giovanni Lapentti | Tennis | |
| Barry Larkin | Shane Larkin | Baseball / Basketball | |
| Lars Larsson | Robin Larsson | Rallycross | |
| Niki Lauda | Mathias Lauda | Motorsport | |
| Finn Laudrup | Michael Laudrup, Brian Laudrup | Association football | |
| Michael Laudrup | Mads Laudrup, Andreas Laudrup | Association football | |
| Renaud Lavillenie, Valentin Lavillenie | Track and field | |
| Alan Lawson | Rory Lawson | Rugby union | |
| | | |
| Joe Laurinaitis, Marc Laurinaitis, John Laurinaitis | Professional wrestling | |
| Joe Laurinaitis | James Laurinaitis | Professional wrestling / American football | |
| Camille Leblanc-Bazinet, Rachel Leblanc-Bazinet | CrossFit
Weightlifting | |
| Hervé Leclerc | Charles Leclerc, Arthur Leclerc | Auto sport | |
| Yvon Ledanois | Kévin Ledanois | Cycle sport | |
| Walter Ledgard Sr. | Walter Ledgard Jr. | Swimming | |
| Walter Ledgard Jr. | Tony Ledgard | Swimming / Cycle sport | |
| Gerald Lee, Sr. | Gerald Lee, Jr. | Basketball |
|
| Leron Lee, Leon Lee | Baseball | |
| Leon Lee | Derrek Lee | Baseball | |
| Lee Jong-beom | Lee Jung-hoo | Baseball | |
| Al Leiter, Mark Leiter | Baseball | |
| Mark Leiter | Mark Leiter Jr. | Baseball | |
| Jerko Leko, Ivan Leko | Association football | |
| Lela | Richarlyson, Alecsandro | Association football | |
| Irina Lenskiy | Olga Lenskiy | Track and field | |
| Andreas Linger, Wolfgang Linger | Luge | |
| Peter Litchfield | Max Litchfield, Joe Litchfield | Association football / Swimming | |
| Olavi Litmanen, Liisa Litmanen | Jari Litmanen | Association football |  Finland |
Valeri Liukin
Anna Kotchneva | Nastia Liukin | Gymnastics |
|
| José Luis Llorente, Paco Llorente, Toñin Llorente (in Spanish), Julio Llorente | Basketball / Association football | |
| José Luis Llorente | Sergio Llorente, Juan Llorente | Basketball | |
| Paco Llorente | Marcos Llorente | Association football | |
| Hugo Lloris, Gautier Lloris | Association football | |
| Clive Lloyd | Jason Clive Lloyd | Cricket, association football |
|
| Howie Long | Chris Long, Kyle Long | American football | United States |
| David Longstaff | Sean Longstaff, Matty Longstaff | Ice hockey / Association football | |
| José Antonio Lopetegui (in Spanish) | Julen Lopetegui | Harri-jasotzaileak
Association football | |
| Erazem Lorbek, Domen Lorbek, Klemen Lorbek | Basketball | |
| Lene Løseth, Nina Haver-Løseth, Mona Løseth | Alpine skiing | |
| Cristiano Lucarelli, Alessandro Lucarelli | Association football | |
| Luisão, Alex Silva | Association football | |
| Tobias Ludvigsson, Fredrik Ludvigsson | Road bicycle racing | |
| Ron Lugbill, Jon Lugbill | Canoe slalom | |
| Leila Luik, Liina Luik, Lily Luik | Long-distance running | |
| Henrik Lundgaard | Christian Lundgaard | Auto racing | |
| Arie Luyendyk | Arie Luyendyk Jr. | Auto racing | |
| Allan Lyburn, William Lyburn | Curling |
|
| Kevin Lyles | Noah Lyles, Josephus Lyles | Track and field | |
| Patricio Mac Allister, Carlos Mac Allister | Association football | |
| Carlos Mac Allister | Kevin Mac Allister, Francis Mac Allister, Alexis Mac Allister | Association football | |
| Monica MacDonald | Brendan Kerry, Chantelle Kerry | Figure skating | |
| Laurent Madouas | Valentin Madouas | Road bicycle racing | |
| Glenn Magnusson | Kim Magnusson | Road bicycle racing | |
| Jan Magnussen | Kevin Magnussen | Auto racing | |
| | Baseball / American football | |
| Sebastian Mai, Lars Lukas Mai | Association football | |
| Hermann Maier, Alexander Maier | Alpine skiing
Snowboarding | |
| Otto Maier Zeuner (in Catalan) | Enrique Maier, Maria Isabel Maier | Association football
Tennis |
|
| Jean Majerus, Jacques Majerus | Cycle sport | |
| Cesare Maldini | Paolo Maldini | Association football | Italy |
| Karl Malone | Cheryl Ford, Demetress Bell | Basketball / American football | |
| Yulia Berberian-Maleeva | Manuela Maleeva, Katerina Maleeva, Magdalena Maleeva | Tennis | |
| Jean-Luc Manaudou, Olga Schippers | , Laure Manaudou, Florent Manaudou | Handball / Badminton / Swimming |
|
| Nick Mangold, Holley Mangold | American football / Weightlifting | |
| Archie Manning | Peyton Manning, Eli Manning | American football | United States |
| Predrag Manojlović, Nenad Manojlović | Water polo | |
| Nigel Mansell | Leo Mansell, Greg Mansell | Auto racing
Road bicycle racing | |
| Diego Maradona, Hugo Maradona, Raúl Maradona | Association football | |
| Diego Maradona | Diego Sinagra | Association football / Beach soccer |
|
| Christophe Marchand, Xavier Marchand | Swimming | |
| Xavier Marchand, Céline Bonnet | Léon Marchand | Swimming | |
| Kevork Mardikian | Mardik Mardikian | Association football | |
| Anne Kristi Marken, Ingeborg Helen Marken | Cross-country skiing, alpine skiing | |
| Dmitri Markov | Oleg Markov | Pole vault / Australian rules football |
|
| Barry Markus, Kelly Markus | Cycle sport | |
| Riejanne Markus, Femke Markus | Cycle sport | |
| Marc Márquez, Álex Márquez | Motorcycle racing | |
| Alvin Martin | David Martin, Joe Martin | Association football | |
| Neil Martin | Dan Martin | Cycle sport |
|
| Mariano Martínez | Miguel Martinez, Yannick Martinez | Cycle sport | |
| Miguel Martinez | Lenny Martinez | Cycle sport | |
| Pierluigi Martini, Oliver Martini | Motorsport | |
| Matteo Marsaglia, Francesca Marsaglia | Alpine skiing | |
| John Barasa Masai | Moses Ndiema Masai, Linet Masai, Dennis, Ndiema and Magdaline | Track and field | |
| Greg Massialas | Alexander Massialas | Fencing |
|
| Matthew Massie, Nicholas Massie | Professional wrestling Tag team | |
| Mario Matt, Andreas Matt, Michael Matt | Alpine skiing / Ski cross / Alpine skiing | |
| Barbara Matić, Brigita Matić | Judo | |
| Maria Mattheussens-Fikkers | Marieke Veenhoven-Mattheussens | Field hockey | Netherlands |
| Bruce Matthews | Kevin Matthews, Jake Matthews | American football | United States |
| Clay Matthews Sr. | Clay Matthews Jr., Bruce Matthews | American football | United States |
| Clay Matthews Jr. | Clay Matthews III, Casey Matthews | American football | United States |
| Mavuba Mafuila | Rio Mavuba | Association football |
|
| Martin Max | Philipp Max | Association football | |
| Butch May | Misty May-Treanor | Volleyball | United States |
| Helmut Mayer | Matthias Mayer | Alpine skiing | |
| Matthew Maynard | Tom Maynard | Cricket |
|
| Floyd Mayweather Sr. | Floyd Mayweather Jr. | Professional boxing | |
| Mazinho | Thiago, Rafinha | Association football |
|
| Andy McCall | Stuart McCall | Association football | |
| John McEnroe, Patrick McEnroe | Tennis | |
| McLean family | | Rugby union | Australia |
| John McGeady | Aiden McGeady | Association football |
|
| Felix McGrath | Atle Lie McGrath | Alpine skiing |
|
| Mark McGwire, Dan McGwire | Baseball / American football | |
| Shirley McIntosh, Donald McIntosh | Jennifer McIntosh, Seonaid McIntosh | Shooting sports | |
| Ron McKeon | Emma McKeon, David McKeon | Swimming | |
| Taylor McKeown, Kaylee McKeown | Swimming | |
| Steve McKinney, Seth McKinney | American football | United States |
| McMahon family | | Professional wrestling | United States |
| Stuart McManus | Sara McManus | Association football / Curling |
|
| Hammy McMillan | Hammy McMillan Jr. | Curling | |
| John McNally, Caty McNally | Tennis | |
| Jimmy McRae | Alister McRae, Colin McRae | Rallying | |
| Loïc Meillard, Mélanie Meillard | Alpine skiing | |
| Kerrie Meares, Anna Meares | Cycle sport | |
| Roger Mears, Rick Mears | Auto racing | |
| Roger Mears | Casey Mears | Auto racing | |
| Rick Mears | Clint Mears | Auto racing | |
| Azmi Mohamed Megahed | Amir Azmy | Volleyball / Association football | |
| Jürgen Melzer, Gerald Melzer | Tennis | |
| Haxhi Mema, Ali Mema, Osman Mema | Association football | |
| Ali Mema | Ardian Mema | Association football | |
| Haxhi Mema | Sulejman Mema | Association football | |
| Andrés Mendieta | Gaizka Mendieta | Association football | |
| Dino Meneghin | Andrea Meneghin | Basketball | |
| Eddy Merckx | Axel Merckx | Cycle sport | |
| Terry Metcalf | | American football | |
| Cameron Meyer, Travis Meyer | Cycle sport | |
| Jonathan Midol, Bastien Midol | Ski cross | |
Borislav Mihaylov
Maria Petrova | Nikolay Mihaylov | Association football / Rhythmic gymnastics | |
| Biser Mihaylov | Borislav Mihaylov or Borislav Mihaylov (in Bulgarian), Ruslan Mihaylov (in Bulgarian) | Association football | |
| Juho Mikkonen | Kerttu Niskanen | Cross-country skiing | |
| Vladimir Milić | Marko Milič | Track and field / Basketball | ( Serbia)
|
| Nikola Milinković, Milana Savić | Sergej Milinković-Savić, Vanja Milinković-Savić | Association football / Basketball | |
| Lotte Miller, Hanna Miller, William Miller (triplets) (in Norwegian) | Triathlon / Taekwondo / Volleyball | |
| Darrell Miller, Reggie Miller, Cheryl Miller | Baseball / Basketball | United States |
| Lennox Miller | | Sprint (running) |
|
| Diego Milito, Gabriel Milito | Association football | |
| Mark Militano, Melissa Militano | Figure skating | |
| Nicola Minali | Riccardo Minali | Road bicycle racing | |
| Rosi Mittermaier, Evi Mittermaier | Alpine skiing | |
| Yasutoshi Miura, Kazuyoshi Miura | Association football | |
| Yoshinobu Miyake, Yoshiyuki Miyake | Olympic weightlifting | |
| Yoshiyuki Miyake | Hiromi Miyake | Olympic weightlifting | |
| Gilberto, Nélio, Nilde | Association football |
|
| Dragan Mladenović | Kristina Mladenovic | Handball / Tennis |
|
| Hamlet Mkhitaryan | Henrikh Mkhitaryan | Association football | |
| Danny Moir, Scott Moir | Ice dancing | |
| Manfred Mölgg, Manuela Mölgg | Alpine skiing | |
| Francesco Molinari, Edoardo Molinari | Golf | |
| Maria Monko, Ksenia Monko | Ice dancing | |
| Aston Moore | Jonathan Moore | Track and field |
|
| Enzo Moser, Aldo Moser, Francesco Moser | Cycle sport | |
| Diego Moser | Moreno Moser, Leonardo Moser, Matteo Moser | Cycle sport | |
| Francesco Moser | Ignazio Moser, | Cycle sport | |
| Stirling Moss, Pat Moss | Auto racing | |
| Charly Mottet | Eva Mottet | Road bicycle racing | |
| Mbo Mpenza, Émile Mpenza | Association football | |
| Mitsuhiro Momota | Mitsuo Momota, Yoshihiro Momota | Professional wrestling / Sumo |
|
| Roger Moran | Scott Moran | Hillclimbing | |
| Old Tom Morris | Young Tom Morris | Golf | |
| Josef Mucha | Karolína Muchová | Association football / Tennis |
|
| Shabazz Muhammad, Asia Muhammad | Basketball / Tennis | |
| Elena Muhhina, Sergei Muhhin | Figure skating | |
| Paul Mullen, Eoin Mullen | Rugby union, cycle sport |
|
| Cathy Muller, Yvan Muller | Motorsport | |
| Nancy Murdoch, Neil Murdoch, David Murdoch | Curling | |
| Gordon Muirhead | Glen Muirhead, Eve Muirhead, Thomas Muirhead | Curling | |
| Dino Murić, Edo Murić | Basketball | |
| Satsuki Muramoto, Kana Muramoto | Figure skating | |
| Shigenobu Murofushi | Koji Murofushi, Yuka Murofushi | Track and field | |
| Jay Murphy | Erik Murphy, Alex Murphy | Basketball |
|
| Judy Erskine Murray | Jamie Murray, Andy Murray | Tennis | United Kingdom |
| Rosamund Musgrave, Andrew Musgrave | Cross-country skiing | |
| Farhat Mustafin | Aliya Mustafina | Wrestling / Gymnastics |
|
| Yohan M'Vila, Yann M'Vila | Association football |
|
| Aldo Nadi, Nedo Nadi | Fencing | |
| Oliver Naesen, Lawrence Naesen | Road bicycle racing | |
| Shigeo Nagashima | Kazushige Nagashima | Baseball |  Japan |
| Sándor Nagy Gabriella Remport | Zsuzsanna Nagy | Ice dancing | |
| Yoshio Nakamura, Yukimasa Nakamura, Kenzo Nakamura | Judo | |
| Annet Nakimbugwe | Hasifah Nassuna | Association football | |
| Steve Nash, Martin Nash | Basketball / Association football | |
| Damien Nazon, Jean-Patrick Nazon | Road bicycle racing | |
| Phil Neal | Ashley Neal | Association football | |
| Gerhardt Neef | Melanie Neef | Association football / athletics |
|
| John Nemechek, Joe Nemechek | Auto racing | |
| Angelika Neuner, Doris Neuner | Luge | |
| Christian Neureuther, Rosi Mittermaier | Felix Neureuther | Alpine skiing | |
| Neville Neville | Gary Neville, Phil Neville, Tracey Neville | Cricket / Association football / Netball | United Kingdom |
| Adrian Newey | Harry Newey | Auto racing | United Kingdom |
| Vincenzo Nibali, Antonio Nibali | Road bicycle racing | |
| Bryden Nicholas, Ella Nicholas | Canoe slalom | |
| Chris Nicholson, Andrew Nicholson | Speed skating | |
| James Nicolson, Gavin Nicolson, Skye Nicolson | Boxing | |
| Scott Niedermayer, Rob Niedermayer | Ice hockey | |
| Benny Nielsen | Mie Nielsen | Swimming | |
| Aldo de Nigris, Antonio de Nigris | Association football | |
| Chanoch Nissany | Roy Nissany | Auto racing | |
| Zacharie Noah | Yannick Noah | Association football / Tennis |
|
| Yannick Noah | Joakim Noah | Tennis / Basketball |
|
| Gifton Noel-Williams | Dejon Noel-Williams | Association football |
|
| Rodrigo Nogueira, Rogério Nogueira | Mixed martial arts / Boxing | |
| Katsuya Nomura | Katsunori Nomura | Baseball | |
| Mathias Norsgaard, Emma Cecilie Norsgaard | Cycle sport | |
| Petter Northug, Tomas Northug, Even Northug | Cross-country skiing | |
| Jordan Norwood, Gabe Norwood | American football / Basketball |
|
| Chucks Nwoko and Udo Nwoko | Kyrian Nwoko | Association football | |
| Sven Nys | Thibau Nys | Cycle sport | |
| Noh Seon-yeong, Noh Jin-kyu | Speed skating | |
| Helga Nowitzki | Dirk Nowitzki, Silke Nowitzki | Basketball | |
| Hanna Öberg, Elvira Öberg | Biathlon | |
| Emerson Obiena | Ernest John Obiena | Pole vault | |
| Jim Ochowicz, Sheila Young | Elli Ochowicz | Cycle sport, speed skating | |
| Tommy O'Connell | Mike O'Connell, Tim O'Connell | American football
Ice hockey | United States |
| Sam O'Dea, Ben O'Dea | Beach volleyball | |
| Gary O'Donovan, Paul O'Donovan | Rowing | |
| Hans Erik Ødegaard | Martin Ødegaard | Association football | |
| Sophia of Greece, Constantine of Greece | Sailing | |
| Olav of Norway | Harald of Norway | Sailing | |
| Kenji Ogiwara, Tsugiharu Ogiwara | Skiing | |
| Christine Ohuruogu, Victoria Ohuruogu | Sprint (running) | |
| Kristjan Oja | Regina Oja | Biathlon | |
| Paul Okon | Paul Okon-Engstler | Association football | |
| Jamie Oleksiak, Penny Oleksiak | Ice hockey / Swimming | |
| Brian Oliver | J. P. Tokoto | Basketball | |
| Ivo Oliveira, Rui Oliveira | Cycle sport | |
| Sead Omeragic | Adnan Omeragic (in Spanish) | Basketball
Volleyball |
|
| Iffy Onuora, Anyika Onuora | Association football / Athletics |
|
| Patrick Ortlieb | Nina Ortlieb | Alpine skiing | |
| Mari Osaka, Naomi Osaka | Tennis | |
| Patrick O'Shaughnessy, Daniel O'Shaughnessy | Association football | |
| Ivica Osim | Amar Osim | Association football | |
| Tatyana Ovechkina | Alexander Ovechkin | Basketball / Ice hockey |
|
| Steve Ovett, Nick Ovett | Middle-distance running / Luge | |
| Steve Ovett | Freddy Ovett | Middle-distance running / Cycle sport |
|
| Jonathan Palmer | Jolyon Palmer, Will Palmer | Auto racing | |
| Ronak Pandit | Heena Sidhu | Shooting | |
| Aurélien Paret-Peintre, Valentin Paret-Peintre | Road bicycle racing | |
| Park Seung-hi, Park Se-yeong | Speed skating | |
| Bobby Parks | Bobby Ray Parks Jr., Bobby Mark Parks | |
|
| Yves Parlier | Nicolas Parlier (in French) | Sailing | |
| Alex Parnov | Vicky Parnov, Liz Parnov | Pole vault | |
| Rafael Pascual | Rafael Pascual Jr. | Volleyball | |
| Irfan Pathan, Yusuf Pathan | Cricket | |
| Joseph Patrick | Lester Patrick, Frank Patrick | Ice Hockey | |
| Lester Patrick | Lynn Patrick, Muzz Patrick | Ice Hockey | |
| Lynn Patrick | Craig Patrick, Glenn Patrick, Lester Lee Patrick | Ice Hockey | |
| Muzz Patrick | Dick Patrick | Ice Hockey | |
| Stephen Patrick | Steve Patrick, James Patrick | Ice hockey | |
| | | |
| John Paul Sr. | John Paul Jr. | Motorsport | |
| María Paulina Pérez, Paula Andrea Pérez (twins) | Tennis | |
| Eric, Gordon and Julian Pearce | Field hockey | Australia |
| Natalya Pechonkina | | Track and field | |
| Dondinho | Pelé | Association football | |
| Pelé | Edinho | Association football | |
| Francis Pélissier, Henri Pélissier, Charles Pélissier | Cycle sport | |
| Mauricio Pellegrino, Maximiliano Pellegrino | Association football | |
| Daryl Perkins | Shane Perkins | Track cycling |
|
| Erik Pérez, Jair Pérez | Mixed martial arts | |
| Silvia Persico, Davide Persico | Cycle sport | |
| Nel Pessoa | Rodrigo Pessoa | Equestrianism |
|
| Wolfgang Peters, Ulrich Peters | Violetta Oblinger-Peters | Canoe slalom | |
| Yevgeny Petrashov | Denis Petrashov | Swimming | |
| Viktor Petrenko, Vladimir Petrenko | Figure skating | |
| Aleksandar Petrović, Dražen Petrović | Basketball | |
| Lee Petty | Richard Petty | Auto racing | United States |
| Richard Petty | Kyle Petty | Auto racing | United States |
| Kyle Petty | Adam Petty | Auto racing | United States |
| Mark Phillips, Anne, Princess Royal (Anne Phillips) | Zara Tindall | Equestrianism | |
| Bum Phillips | Wade Phillips | American football | United States |
| Greg Phillips | Erin Phillips | Australian rules football (both), basketball (Erin)[3] | |
| Connie Carpenter-Phinney, Davis Phinney | Taylor Phinney | Road bicycle racing | United States |
| Geeta Phogat, Babita Kumari | Wrestling | |
| Franck Piccard, Ian Piccard, Leila Piccard, Ted Piccard, Jeff Piccard | Alpine skiing | |
| Jean Pickering | Shaun Pickering | Track and field | United Kingdom |
| Peter Pieters | Roy Pieters, Amy Pieters | Road bicycle racing | Netherlands |
| Gojko Pijetlović, Duško Pijetlović | Water polo | |
| Daria Pikulik, Wiktoria Pikulik | Racing cyclist | |
| Brian Pillman | Brian Pillman Jr. | American football
Professional wrestling | |
| Walter Pirinoli, Marco Pirinoli | Sailing | |
| Nelson Piquet | Nelson Piquet Jr., Pedro Piquet | Auto racing |
|
| Bogdan Pishchalnikov, Darya Pishchalnikova, Kirill Pishchalnikov | Discus throw | |
| Claudio Pizarro, Diego Pizarro | Association football | |
| Miles Plumlee, Mason Plumlee, Marshall Plumlee | Basketball | |
| Paul Pogba, Mathias Pogba, Florentin Pogba | Association football |
|
| Susan Polgar, Sofia Polgar, Judit Polgár | Chess | Hungary |
| Dmitry Polyanski, Igor Andreyevich Polyanski | Triathlon | |
| Boonsak Ponsana, Salakjit Ponsana | Badminton |  Thailand |
| Jyrki Ponsiluoma | Martin Ponsiluoma | Cross-country skiing, biathlon | |
| Mart Poom | Markus Poom | Association football | |
| Jean-Paul van Poppel, Leontine van der Lienden | Boy van Poppel, Danny van Poppel | Road bicycle racing | |
| Nicolas Portal, Sébastien Portal | Cycle sport | |
| Miguel Porteous, Nico Porteous | Freestyle skiing | |
| Tiffany Porter, Cindy Ofili | Track and field | |
| Kristaps Porziņģis, Jānis Porziņģis | Basketball | |
| Peter Prevc, Domen Prevc, Cene Prevc | Ski jumping | |
| Markus Prock | Hannah Prock | Luge | |
| Annemarie Moser-Pröll, Cornelia Pröll | Alpine skiing | |
| John Paine, Sumner Paine | Shooting sports | |
| Olivier Panis | Aurélien Panis | Auto racing | |
| Jiří Prskavec | Jiří Prskavec | Canoe slalom | |
| Alain Prost | Nico Prost | Auto racing | |
| Pablo Punyed, Renato Punyed | Association football |
|
| Joachim Puchner, Mirjam Puchner | Alpine skiing | |
| | | |
| Eigil Ramsfjell | Maia Ramsfjell, Magnus Ramsfjell | Curling | |
| Maria Rosa Quario | Federica Brignone | Alpine skiing | |
| Derek Quinnell | Scott Quinnell, Craig Quinnell, Gavin Quinnell | Rugby | |
| Nairo Quintana, Dayer Quintana | Road bicycle racing | |
| Agnieszka Radwańska, Urszula Radwańska | Tennis | |
| Andreas Raelert, Michael Raelert | Triathlon | |
| Rafael, Fabio | Association football | |
| Bobby Rahal | Graham Rahal | Auto racing | |
| Bernard | Phil Rajzman | Volleyball / Surfing | |
| Munaf Ramadan | Ammar Ramadan | Association football | |
| Strahinja Rašović, Viktor Rašović | Water polo | |
| Daniele Ratto, Rossella Ratto | Cycle sport | |
| Ken Read, Lynda Robbins | Erik Read, Jeffrey Read | Alpine skiing | |
| Harry Redknapp | Jamie Redknapp | Association football | United Kingdom |
| Cathy Reed, Chris Reed, Allison Reed | Ice dancing |
|
| Tomas Ress, Kathrin Ress | Basketball | |
| Claudio Reyna, Danielle Reyna | Giovanni Reyna | Association football | |
| Bernardinho | Bruno Rezende | Volleyball | |
| Anfisa Reztsova | Daria Virolaynen, Kristina Reztsova | Biathlon | |
| Franck Ribéry, Steeven Ribéry | Association football | |
| Glen Rice | Glen Rice Jr. | Basketball | |
| Maurice Richard, Henri Richard | Ice Hockey | |
| Claudia Riegler, Manuela Riegler | Snowboarding | |
| Leon Riley | Pat Riley, Lee Riley | BaseballBasketball American football
| |
| Eusebio Ríos | Roberto Ríos | Association football | |
| Cal Ripken Sr. | Cal Ripken Jr., Billy Ripken | Baseball | |
| Amy Roberts, Jessica Roberts | Cycle sport | |
| Kenny Roberts | Kenny Roberts Jr. | Motorcycle racing | |
| Zane Robertson, Jake Robertson | Distance Running | |
| Desmond Robinson, Brian Robinson | Road bicycle racing | |
| Stephen Roche, Laurence Roche | Road bicycle racing | |
| Stephen Roche | Nicolas Roche | Road bicycle racing | |
| Christophe Rochus, Olivier Rochus | Tennis | |
| Aaron Rodgers, Jordan Rodgers | American football | |
| Anastasia Rodionova, Arina Rodionova | Tennis |
|
| Dennis Rodman | Trinity Rodman | Basketball / Association football | |
| Francisco Rodríguez Araya, Ricardo Rodríguez (footballer), Roberto Rodríguez Araya | Association football | |
| José Luis Rodríguez, Aaron Rodríguez | Professional wrestling | |
| José Luis Rodríguez | José Alberto Rodríguez, Guillermo Rodríguez | Mixed martial arts / Professional wrestling | |
| Eberhard Rösch | Michael Rösch | Biathlon |
|
| Mariano Rojas, José Joaquín Rojas | Cycle sport | |
| Oksana Romanenkova | Viktor Romanenkov | Figure skating | |
| Romário | Romarinho | Association football | |
| Yoel Romero, Yoan Pablo Hernández | Wrestling / Boxing |
|
| Ronaldinho, Assis | Association football | |
| Wayne Rooney, John Rooney | Association football |
|
| Joe Root, Billy Root | Cricket | |
| Keke Rosberg | Nico Rosberg | Auto racing |
|
| Louis Rosier | Jean-Louis Rosier | Motorsport | |
| Graziano Rossi | Valentino Rossi | Motorcycle racing | |
| Jolanda de Rover | Kira Toussaint | Swimming | |
| Harri Rovanperä | Kalle Rovanperä | Rallying | |
| Matthew Rowe, Luke Rowe | Cycle sport | |
| Joanna Rowsell Shand, Erick Rowsell | Cycle sport | |
| Maurício Rua, Murilo Rua | Mixed martial arts | |
| Max Rüegg, Tony Rüegg | Bobsleigh | |
| Tony Rüegg | Ralph Rüegg | Bobsleigh | |
| Anastasija Reiberger, Lisa Ryzih | Track and field | Germany |
| Virgil Runnels Jr. | Dustin Runnels, Cody Runnels | Professional wrestling | |
| Tony Rutter | Michael Rutter | Motorcycle racing | |
| Christian Ruud | Casper Ruud | Tennis | |
| Buddy Ryan | Rex Ryan, Rob Ryan | American football | United States |
| Kendall Ryan, Alexis Ryan | Cycle sport | |
| Martina Sáblíková, Milan Sáblík | Speed skating, Cycle sport | |
| Arvydas Sabonis | Domantas Sabonis, Tautvydas Sabonis (in Spanish) | Basketball |
|
| Dragan Šakota | Dušan Šakota | Basketball |
|
| Marat Safin, Dinara Safina | Tennis | |
| Juraj Sagan, Peter Sagan | Road bicycle racing | |
| Rupa Saini, Krishna Saini, Prema Saini | Field hockey |  India |
| Carlos Sainz | Carlos Sainz Jr. | Rallying / Auto racing | |
| Buvaisar Saitiev, Adam Saitiev | Wrestling | |
| Joe Saldana | Joey Saldana | Auto racing | |
| István Sallói | Dániel Sallói | Association football | |
| Yuliya Salnikova | Stefanos Tsitsipas, Petros Tsitsipas | Tennis |
|
| Nino Salukvadze | Tsotne Machavariani | Shooting sports | |
| Chupe Salvador, Gregorio Salvador | Association football |
|
| Adriana Samuel, Alexandre Ramos Samuel | Volleyball | |
| Emilio Sánchez, Javier Sánchez, Arantxa Sánchez Vicario | Tennis | |
| Luis León Sánchez, Pedro León Sánchez | Road bicycle racing / Association football | |
| Jesús Sánchez Jover, Francisco Sánchez Jover | Volleyball | |
| Francisco Sánchez Jover | Javier Sánchez Carreres | Volleyball | |
| Sergio Santamaría, Luisja Santamaría (in Spanish) | Association football | |
| Sergio Santamaría | Diana Santamaría (in Spanish) | Association football
Swimming | |
| | Volleyball | |
| Luguelín Santos, Juander Santos | Sprinting | |
| Djalma Santos,Nilton Santos | Association football | |
| Lisa Sargeant, Kristy Sargeant | Figure skating | |
| Nobuo Satō, Kumiko Sato | Yuka Sato | Figure skating | |
| Robbie Savage | Charlie Savage | Association football | |
| Ivan Savostikov | Kirill Savostikov | Association football | |
| Roland Schär | Michael Schär | Road bicycle racing | |
| Ian Scheckter, Jody Scheckter | Auto racing | |
| Jody Scheckter | Tomas Scheckter, Toby Scheckter | Auto racing | |
| Marlies Schild, Bernadette Schild | Alpine skiing | |
| Johny Schleck | Fränk Schleck, Andy Schleck | Road bicycle racing | |
| Peter Schmeichel | Kasper Schmeichel | Association football | |
| Anna Karolína Schmiedlová, Kristína Schmiedlová | Tennis | |
| Michael Schumacher, Ralf Schumacher | Auto racing | |
| Michael Schumacher, Corinna Schumacher | Mick Schumacher | Auto racing, equestrianism | |
| Ralf Schumacher | David Schumacher | Auto racing | |
| Dave Schultz, Mark Schultz | Wrestling | |
| Kathrin Schweinberger, Christina Schweinberger (twins) | Road bicycle racing | |
| Bastian Schweinsteiger, Tobias Schweinsteiger | Association football | |
| Miles Scotson, Callum Scotson | Cycle sport | |
| Roy Sentjens | Sente Sentjens | Road bicycle racing |
|
| Chico Serra | Daniel Serra | Motor sport | |
| Jack Shea | Jim Shea Sr. | Speed skating / Skiing | United States |
| Jim Shea Sr. | Jimmy Shea | Skiing / Skeleton | United States |
| Jonny Searle, Greg Searle | Rowing | United Kingdom |
| Valentyna Semerenko, Vita Semerenko | Biathlon | |
| Ekramy El-Shahat | Sherif Ekramy | Association football | |
| Carlo Sharma | | | |
| Cassie Sharpe, Darcy Sharpe | Freestyle skiing / Snowboarding | |
| Sterling Sharpe, Shannon Sharpe | American football | |
| Bryan Shelton | Ben Shelton | Tennis | |
| Maia Shibutani, Alex Shibutani | Ice dancing | United States |
| Peter Shilton | Sam Shilton | Association football | |
| Natalya Shubenkova | Sergey Shubenkov | Track and field | |
| Suad Šehović, Sead Šehović | Basketball | |
| Juris Šics, Andris Šics | Luge | |
| Sidek Abdullah Kamar | Misbun, Razif, Jalani, Rahman and Rashid Sidek | Badminton |  Malaysia |
| Misbun Sidek | Misbun Ramdan Misbun | Badminton | Malaysia |
| Christina Siggaard, Soren Malling Siggaard | Cycle sport | |
| Ben Sim | Sami Kennedy-Sim | Cross-country skiing / Freestyle skiing | |
| Cristian Javier Simari Birkner, María Belén Simari Birkner, Macarena Simari Birkner | Alpine skiing | |
| Diego Simeone | Giovanni Simeone, Gianluca Simeone | Association football |
|
| Dave Simmons | Ben Simmons | Basketball |
|
| Phil Simms | Chris Simms, Matt Simms | American football | |
| Pascal Simon, Régis Simon, Jérôme Simon, François Simon | Cycle sport | |
| Jeff Simpson | Russell Simpson | Tennis | |
| Milkha Singh | Nirmal Kaur | Athletics / Volleyball | |
| Valent Sinković, Martin Sinković | Rowing | |
| Alexei Sivakov, Aleksandra Koliaseva | Pavel Sivakov | Cycle sport |
|
| Willy Skibby | Jesper Skibby, Karina Skibby | Cycle sport | |
| Mickey Skinner | Zak Skinner | Rugby union, Para-athletics | |
| Ann-Elen Skjelbreid, Liv Grete Skjelbreid | Biathlon | |
| Rozanne Slik, Ivar Slik | Cycle sport | |
| Uiloq Slettemark, Øystein Slettemark | Ukaleq Slettemark, Sondre Slettemark, Inuk Slettemark | Biathlon |
|
| Anatoli Šmigun, Rutt Šmigun | Kristina Šmigun-Vähi, Katrin Šmigun | Cross-country skiing |
|
| Assoli Slivets, Timofei Slivets | Freestyle skiing | |
| Lotte Smiseth Sejersted, Adrian Smiseth Sejersted | Alpine skiing | |
| Calvin Smith | Calvin Smith Jr. | Track and field | |
| David Smith, Pete Smith | Curling | |
| David Smith | Kyle Smith, Cammy Smith, Mili Smith | Curling | |
| Laura Smulders, Merel Smulders | BMX racing | |
| Wesley Sneijder, Rodney Sneijder, Jeffrey Sneijder | Association football | |
| Sócrates, Raí | Association football | |
| Bright Sodje, Efe Sodje, Sam Sodje, Akpo Sodje | Rugby league, rugby union, association football |
|
| Tiit Sokk | Tanel Sokk, Sten Sokk | Basketball | |
| Henning Solberg, Petter Solberg | Rallying | |
| Petter Solberg | Oliver Solberg | Rallying | |
| Enrique Solis, Julian Solís, Rafael Solis, Santos Solis | Boxing | Puerto Rico |
| Diego Soñora | Joel Soñora | Association football |  Argentina
United States |
| Gøran Sørloth | Alexander Sørloth | Association football | |
| Scott Spann, Alexi Spann | Swimming | |
| John Spencer | Brad Spencer | Association football | |
| Leon Spinks, Michael Spinks | Leon Spinks Jr. Darrell Spinks, Cory Spinks | Boxing | United States |
| Alois Stadlober, Roswitha Steiner | Luis Stadlober, Teresa Stadlober | Cross-country skiing, alpine skiing | |
| Cees Stam | Danny Stam | Bicycle racing | |
| Hennie Stamsnijder | Tom Stamsnijder | Bicycle racing | |
| Tony Stanger | George Stanger | Rugby union / Association football |
|
| Mitchell Starc, Brandon Starc | Cricket / High jump | |
| Olafur Stefansson (uncle), Jon Arnor Stefansson (uncle) | Martin Hermannsson[4] | Handball
Basketball | |
| Ed Stein, Brian Stein, Mark Stein | Association football | |
| John Stephens | Sloane Stephens | American football
Tennis | |
| Hroar Stjernen | Andreas Stjernen | Ski jumping | |
| Wayne Stetina, Dale Stetina | Cycle sport | |
| Dale Stetina | Peter Stetina | Cycle sport | |
| Dennis Stewart | Elliot Stewart | Judo
Paralympic judo | |
| Jimmy Stewart, Jackie Stewart | Auto racing | United Kingdom |
| Jackie Stewart | Paul Stewart | Auto racing | United Kingdom |
| Josef Stiegler | Resi Stiegler | Alpine skiing |
|
| John Stockton | David Stockton, Michael Stockton | Basketball | |
| Luke Stoltman, Tom Stoltman | Strongman | |
| Gordon Strachan | Gavin Strachan | Association football | |
| Darryl Strawberry | D. J. Strawberry | Baseball / Basketball | United States |
| Hans Stuck | Hans-Joachim Stuck | Auto racing | Germany |
| Luis Suárez, Paolo Suárez | Association football |
|
| Vaso Subotić | Gavril Subotić | Water polo |
|
| Cyril Suk, Helena Suková | Tennis |
Czech Republic |
| Sergei Sukhoruchenkov | Olga Zabelinskaya | Road bicycle racing |
|
| Clive Sullivan | Anthony Sullivan | Rugby league, Rugby union | |
| Katie Summerhayes. Molly Summerhayes | Freestyle skiing | |
| John Surtees | Henry Surtees | Motorsport | |
| Sutter family | | Ice hockey | Canada |
| Gary Sutton, Shane Sutton | Road bicycle racing | Australia |
| Gary Sutton | Christopher Sutton | Road bicycle racing | Australia |
| Mike Sutton | Chris Sutton, John Sutton | Association football | |
| Gunde Svan, Marie Svan | Julia Svan (Swedish), Ferry Svan | Cross-country skiing and Auto racing
Skiing, Logger sports | |
| Gabriela Svobodová | Gabriela Koukalová | Biathlon | |
| Allyson Swaby, Chantelle Swaby | Association football |
|
| Oscar Swahn | Alfred Swahn | Shooting | |
| Jack Swart, Stephen Swart | Road bicycle racing | |
| Tomasz Świątek | Iga Świątek | Rowing, Tennis | |
| Maarten Swings, Bart Swings | Speed skating, inline speed skating | |
| Bernadette Swinnerton, Catherine Swinnerton, Paul Swinnerton | Road bicycle racing | |
| Don Talbot, Jan Cameron (divorced) | Scott Talbot | Swimming | |
| Marco Tamberi | Gianmarco Tamberi | High jump | |
| Harry Tanfield, Charlie Tanfield | Cycle sport | |
| Mosi Tatupu | Lofa Tatupu | American football |
United States |
| Jeff Taylor | Jeffery Taylor | Basketball |
|
| Jeff Teague, Marquis Teague | Basketball | United States |
| | | |
| Niki Terpstra, Mike Terpstra | Cycle sport | |
| Lars Teutenberg, Sven Teutenberg, Ina-Yoko Teutenberg | Cycle sport | |
| Lars Teutenberg | Lea Lin Teutenberg, Tim Torn Teutenberg | Cycle sport | |
| Stefan Tewes, Jan-Peter Tewes | Field hockey | Germany |
| Mike Thackwell, Lisa Thackwell | Motor racing | |
| Kurt Thiim | Nicki Thiim | Motorsport |  Denmark |
| Marielle Thompson, Broderick Thompson | Ski cross / Alpine skiing | |
| Mychal Thompson | Mychel Thompson, Klay Thompson, Trayce Thompson | Basketball / Baseball |
|
| Candide Thovex, Mirabelle Thovex | Freestyle skiing / Snowboarding | |
| Lilian Thuram | Marcus Thuram, Khéphren Thuram | Association football | |
| Laurent Tillie, Caroline Keulen | Kim Tillie, Kévin Tillie, Killian Tillie | Volleyball / Basketball |  France
Netherlands |
| Maija Tīruma, Elīza Cauce | Luge | |
| Dorota Tlałka-Mogore, Małgorzata Tlałka-Mogore | Alpine skiing |
|
| Pauli Toivonen | Henri Toivonen, Harri Toivonen | Rallying
Auto racing | |
| Mel Tom | Logan Tom | American football
Volleyball | |
| Keith Tkachuk | Matthew Tkachuk, Brady Tkachuk | Ice hockey | |
| Susan Tooby, Angela Tooby | Track and field | |
| Geoff Wightman Susan Tooby | Jake Wightman | Track and field | |
| Amédée Thubé, Gaston Thubé, Jacques Thubé | Sailing | |
| Yaya Touré, Kolo Touré, Ibrahim Touré | Association football | |
| Jorge Trezeguet | David Trezeguet | Association football |
|
| Emma Trott, Laura Kenny | Cycle sport | |
| Pia Trulsen | Curling | |
| Mitsuo Tsukahara | Naoya Tsukahara | Artistic gymnastics | Japan |
| Freddie Tuilagi, Henry Tuilagi, Alesana Tuilagi, Anitelea Tuilagi, Sanele Vavae Tuilagi, Manu Tuilagi | Rugby union |  Samoa
|
| Brian Tutt | Brianne Tutt | Ice hockey / Speed skating | |
| Panna Udvardy, Luca Udvardy | Tennis | |
| Ted Uhlaender | Katie Uhlaender | Baseball / Skeleton | United States |
| Rory Underwood, Tony Underwood | Rugby Union | |
| Jerry Unser Jr., Bobby Unser, Al Unser | Auto racing | United States |
| Jerry Unser Jr. | Johnny Unser | Auto racing | United States |
| Bobby Unser | Robby Unser | Auto racing | United States |
| Al Unser | Al Unser Jr. | Auto racing | United States |
| Al Unser Jr. | Al Unser III | Auto racing | United States |
| Rolando Uríos (in Spanish) | Rolando Uríos González | Handball |
|
| Alexander Uspenski, Vladimir Uspenski | Figure skating | |
| Fulvio Valbusa, Sabina Valbusa | Cross-country skiing | |
| Jurgen van den Goorbergh | Zonta van den Goorbergh | Motorcycle racing | |
| Adri van der Poel (Raymond Poulidor French grandfather) | David van der Poel, Mathieu van der Poel | Road bicycle racing, cyclo-cross | |
| Sanne van Kerkhof, Yara van Kerkhof | Speed skating | |
| Andy Van Slyke | Scott Van Slyke | Baseball | United States |
| Ernie Vandeweghe | Kiki VanDeWeghe, Tauna Vandeweghe | Basketball / Swimming | United States |
| Tauna Vandeweghe | CoCo Vandeweghe | Swimming / Tennis | United States |
| Jelle Vanendert, Dennis Vanendert | Cycle sport | |
| Wim Vansevenant | Mauri Vansevenant | Road bicycle racing | |
| Laurens Vanthoor, Dries Vanthoor | Motor racing | |
| Dieter Vanthourenhout, Michael Vanthourenhout | Cycle sport | |
| Sylvain Vasseur, Alain Vasseur | Road bicycle racing | |
| Alain Vasseur | Cédric Vasseur, Loïc Vasseur | Road bicycle racing | |
| José Velázquez | José de Jesús Mendoza, José Alfredo Mendoza, Arturo Mendoza, Tomas Mendoza, Ray Mendoza Jr. | Professional wrestling | |
| Martin Velits, Peter Velits (twins) | Road bicycle racing | |
| Julien Vermote, Alphonse Vermote (in Dutch) | Road bicycle racing | |
| Juan Ramón Verón | Juan Sebastián Verón | Association football | |
| Zoltán Verrasztó | Dávid Verrasztó, Evelyn Verrasztó | Swimming | |
| Jos Verstappen | Max Verstappen | Auto racing | Netherlands |
| František Veselý (in Czech) (great-grandfather) | František Vesely (in Czech) (grandfather) | Association football | |
| František Veselý (in Czech) (grandfather) | František Veselý (father) | Association football | |
| František Veselý (father) | Daniel Veselý (in Czech), Lukáš Veselý | Association football | |
| Frédéric Vichot (uncle) | Arthur Vichot | Road bicycle racing | |
| Jean-Pierre Vidal, Vanessa Vidal | Alpine skiing | |
| Aurelio Vidmar, Tony Vidmar | Association football | |
| Roberto Vieri | Christian Vieri, Max Vieri | Association football |
|
| Jose Marcelo Vildoza | Luca Vildoza | Basketball | |
| Gilles Villeneuve, Jacques Villeneuve (elder) | Auto racing | |
| Gilles Villeneuve | Jacques Villeneuve | Auto racing | |
| Emilio Villoresi, Luigi Villoresi | Auto racing | |
| Elia Viviani, Attilio Viviani | Cycle sport | |
| Erik De Vlaeminck, Roger De Vlaeminck | Cycle sport | |
| Blanka Vlašić, Nikola Vlašić | Athletics / Association football | |
| Gerrit Voorting, Adrie Voorting | Road bicycle racing | |
| Petar Vukičević | Christina Vukicevic, Vladimir Vukicevic | | ( Serbia)
|
| Bill Vukovich (grandfather) | Bill Vukovich II (father) | Auto racing | |
| Bill Vukovich II (father) | Bill Vukovich III (grandson) | Auto racing | |
| Feʻao Vunipola | Mako Vunipola, Billy Vunipola | Rugby union |
|
| Jessie Wadworth | Brenda Wadworth | Archery | |
| Walfridsson family (in German) | | Auto sport | |
| Kira Walkenhorst, Pia Walkenhorst | Beach volleyball | |
| Chris Walker | Jessie Walker | Cycle sport | |
| Gretchen Walsh, Alexandra Walsh | Swimming | |
| Bill Walton | Luke Walton | Basketball | United States |
| Derek Warwick, Paul Warwick | Auto racing | United Kingdom |
| George Weah | George Weah Jr., Timothy Weah | Association football |
|
| David Weir | Jensen Weir | Association football |
|
| Robert Weir | Jillian Weir | Track and field |
|
| Harti Weirather, Hanni Wenzel | Tina Weirather | Alpine skiing |
|
| Paul Wellens, Johan Wellens, Leo Wellens | Cycle sport | |
| Leo Wellens | | Cycle sport | |
| Bruce Wells | Jossi Wells, Byron Wells, Beau-James Wells, Jackson Wells | Freestyle skiing | |
| Lotta Udnes Weng, Tiril Udnes Weng | Cross-country skiing | |
| Hanni Wenzel, Andreas Wenzel | Alpine skiing | |
| Jacob Wester, Oscar Wester | Freestyle skiing | |
| Curtis White, Emma White | Cycle sport | |
| Jim Whitley, Jeff Whitley | Association football | |
| Tre Whyte, Kye Whyte | BMX racing | |
| Gary Wiggins | Bradley Wiggins | Cycle sport |
|
| Bradley Wiggins | Ben Wiggins | Cycle sport | |
| Dominique Wilkins, Gerald Wilkins | Basketball | United States |
| Gerald Wilkins | Damien Wilkins | Basketball | United States |
| Daniël Willemsen, Marcel Willemsen | Sidecarcross | |
| Frank Williams | Claire Williams, Jonathan Williams | Auto sport | |
| Iñaki Williams, Nico Williams | Association football |
|
| Jodie Williams, Hannah Williams | Athletics | |
| J. J. Williams | Rhys Williams | Rugby union / Track and field | United Kingdom |
| Venus Williams, Serena Williams | Tennis | |
| Stuart Willmott (Jackie Willmott aunt) | Aimee Willmott, Chloe Willmott | Swimming | |
| Bryon Wilson, Bradley Wilson | Freestyle skiing | |
| Malcolm Wilson | Matthew Wilson | Rallying | United Kingdom |
| Markus Windisch, Dominik Windisch | Biathlon | |
| Manfred Winkelhock | Markus Winkelhock | Auto racing | |
| Manfred Winkelhock, Joachim Winkelhock, Thomas Winkelhock | Auto racing | |
| Kellen Winslow | Kellen Winslow II | American football | United States |
| Herbert Wittmann | Marco Wittmann, Nico Wittmann | Auto sport | |
| Agnesa Wlachovská | Vladimír Búřil, Peter Búřil | Figure skating / Ice hockey |
|
| Alan Woan | Ian Woan | Association football | |
| Gordon Wood | Keith Wood | Rugby union | |
| Patrik Wozniacki, Caroline Wozniacki | Association football / Tennis | |
| Mats Wranå | Rasmus Wranå, Isabella Wranå | Curling | |
| Ian Wright | Shaun Wright-Phillips, Bradley Wright-Phillips | Association football | |
| Kal Yafai, Gamal Yafai, Galal Yafai | Boxing | |
| Adam Yates, Simon Yates | Cycle sport | |
| Kazuki Yazawa, Aki Yazawa | Canoe slalom | |
| Andrey Yefimov | Yuliya Yefimova | Swimming | |
| Yeo Hong-chul, Kim Chae-eun (formerly Kim Yoon-ji) | Yeo Seo-jeong | Artistic gymnastics | |
| Elias Ymer, Mikael Ymer | Tennis | |
| Clint Yorke, Dwight Yorke | Cricket, association football | |
| Chinami Yoshida, Yurika Yoshida | Curling | |
| Sheila Young, Roger Young | Cycle sport, speed skating | |
| Nick Youngs | Tom Youngs, Ben Youngs | Rugby union | |
| | | |
| Carlos Yulo, Eldrew Yulo | Gymnastics | |
| Erik Zabel | Rick Zabel | Road bicycle racing | |
| Hillar Zahkna | Rene Zahkna | Biathlon | |
| Zlatko Zahovič | Luka Zahović | Association football | |
| Ilnur Zakarin, Aydar Zakarin | Road bicycle racing | |
| Adam Žampa, Andreas Žampa | Alpine skiing | |
| Benjamín Zarandona, Iván Zarandona | Association football |
|
| Mauro Zárate, Rolando Zárate, Sergio Zárate, Ariel Zárate | Association football | |
| Igor Zavozin, Elena Garanina (divorced) | Maxim Zavozin | Ice dancing |
|
| Vyacheslav Zaytsev, Irina Pozdnyakova | Ivan Zaytsev | Volleyball / Swimming |
|
| Zé Elias, Rubinho | Association football | |
| Luke Zeller, Tyler Zeller, Cody Zeller | Basketball | |
| Zico, Edu | Association football | |
| Zico | Junior | Association football | |
| Zinedine Zidane | Enzo Fernández, Luca Zidane | Association football |
|
| Dimitar Zlatanov | Hristo Zlatanov | Volleyball | |
| Emil Zografski | Vladimir Zografski | Ski jumping | |
| Zizinho | Giovani dos Santos, Éder dos Santos, Jonathan dos Santos | Association football |
|
| Haimar Zubeldia, Joseba Zubeldia | Road bicycle racing | |
| Marina Zueva | Fedor Andreev | Ice dancing | |
| Pirmin Zurbriggen, Heidi Zurbriggen | Alpine skiing | |
| Pirmin Zurbriggen | Elia Zurbriggen | Alpine skiing | |
| Alexander Zverev Sr. | Mischa Zverev, Alexander Zverev Jr. | Tennis |
|
| Charles Zwolsman Sr. | Charles Zwolsman Jr. | Motorsport | |
| Iftikhar Ali Khan Pataudi | Mansoor Ali Khan Pataudi | Cricket | |
| Roger Binny | Stuart Binny | Cricket | |
| Yograj Singh | Yuvraj Singh | Cricket | |
| Krishnamachari Srikkanth | Anirudha Srikkanth | Cricket | |
| Ramanathan Krishnan | Ramesh Krishnan | Tennis | |
| Milkha Singh | Jeev Milkha Singh | Athletics, Golf | |
| Dhyan Chand | Ashok Kumar | Field hockey | |
| Vece Paes | Leander Paes | Field hockey, Tennis | |
| Irfan Pathan, Yusuf Pathan | Cricket | |
| Hardik Pandya, Krunal Pandya | Cricket | | |
