This article lists characters in the various canonical incarnations of Star Trek. This includes fictional main and major characters created for the franchise.
| Character | Actor(s) | Appearances | Rank | Posting | Position | Species | |
|---|---|---|---|---|---|---|---|
| Airiam | Sara Mitich | Seasons 1–2 (DSC) | Lt. Commander | USS Discovery | Science officer | Human cyborg | |
| Hannah Cheesman | |||||||
| Jonathan Archer | Scott Bakula | Seasons 1–4 (ENT) | Captain | Enterprise NX-01 | Commanding officer | Human | |
| Soji Asha | Isa Briones | Seasons 1-2 (PIC) | Civilian | Romulan Reclamation Site | Anthropologist | Android | |
| Ayala | Tarik Ergin | Seasons 1–7 (VOY) | Lieutenant, JG (provisional) | USS Voyager | Helmsman (S7) Security officer (S1-7) Maquis (previous) | Human | |
| Azan | Kurt Wetherill | Seasons 6–7 (VOY) | Civilian | USS Voyager Passenger | Wysanti/xB | ||
| Reginald Barclay | Seasons 3–4,6–7 (TNG) Movies (FCT) Seasons 2,6–7 (VOY) | Lt. Commander (VOY) Lieutenant, JG (TNG, FCT) | Starfleet Command (VOY) USS Enterprise-E (FCT) USS Enterprise-D (TNG) | Pathfinder Project (VOY) Engineering officer (TNG, movies) | Human | ||
| Bareil Antos | Philip Anglim | Seasons 1–3,6 (DS9) | Vedek | Bajor resident | Bajoran religious leader (S1-3) | Bajoran | |
| Julian Bashir | Alexander Siddig | Seasons 1–7 (DS9) Season 6 (TNG) | Lieutenant (S4-7) Lieutenant, JG (S1-3) | Deep Space 9 | Chief medical officer | Human | |
| B'Etor | Gwynyth Walsh | Seasons 4–5,7 (TNG) Movies (GEN) Season 1 (DS9) | Commander, Klingon Empire | Bird of Prey | First officer | Klingon | |
| Brad Boimler | Jack Quaid | Seasons 1-4 (LOW) Season 2 (SNW) (Those Old Scientists) | Ensign (Seasons 1-3) Lieutenant, JG (Season 4) | USS Cerritos (Seasons 1-4), USS Titan (Season 2) | Human | ||
| Cleveland "Book" Booker V | David Ajala | Seasons 3-5 (DSC) | Civilian | USS Discovery 1031-A | Courier, Starfleet consultant | Kwejian | |
| Boothby | Ray Walston | Season 5 (TNG) Season 5 (VOY) | Civilian | Starfleet Academy | Groundskeeper | Human | |
| Borg Queen | Alice Krige | Seasons 5–7 (VOY) Movies (FCT) Season 2 (PIC) | None | Borg Collective | Leader of Borg Collective | Borg | |
| Susanna Thompson | |||||||
| Annie Wersching | |||||||
| Phillip Boyce | John HoytQ | "The Cage" | Lt. Commander | USS Enterprise | Chief medical officer | Human | |
| Brunt | Jeffrey Combs | Seasons 3–7 (DS9) | Civilian | Ferenginar resident | Ferengi commerce liquidator | Ferengi | |
| Ronald Altman Bryce | Ronnie Rowe Jr. | Seasons 1–3 (DSC) | Lieutenant Commander (DSC S4) Lieutenant, JG | USS Curie (DSC S4) USS Discovery | Communications officer | Human | |
| Gabrielle Burnham | Sonja Sohn | Seasons 2-3 (DSC) | None | Section 31 | Intelligence operative Astrophysicist | Human | |
| Michael Burnham | Sonequa Martin-Green | Seasons 1–5 (DSC) | Captain (S4-5) Commander (S1-3 Crewman (S1) | USS Discovery (S1-2) USS Shenzhou (S1) | Captain (S4-5) First officer (S3) Science officer (S2) Science specialist (S1) First officer (S1) | Human | |
| Arista Arhin (as a child) | |||||||
| Joseph Carey | Josh Clark | Seasons 1,5–7 (VOY) | Lieutenant | USS Voyager | Engineering officer | Human | |
| Chakotay | Robert Beltran | Season 1 (PRO) Seasons 1–7 (VOY) | Captain Commander (provisional) | USS Protostar (PRO S1) USS Voyager S1-7 | Captain (PRO S1) First officer (VOY S1-7) Maquis (S1) | Human | |
| Christine Chapel | Majel Barrett | Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, TVH) | Commander (TMP, TVH) Crewman (TOS, TAS) | Starfleet Command (TVH) USS Enterprise (TOS, TAS, TMP) | Starfleet Command officer (TVH) Medical officer (TMP) Nurse (TOS, TAS) | Human | |
| Jess Bush | Seasons 1-2 (SNW) | Crewman (SNW) | USS Enterprise (SNW) | Nurse (SNW) | |||
| Pavel Chekov | Walter Koenig | Seasons 2–3 (TOS) Movies (TMP, WOK, SFS, TVH, TFF, TUC, GEN) Season 5 (DS9) | Commander (WOK, SFS, TVH, TFF, TUC, GEN) Lieutenant (TMP) | USS Enterprise-A (TVH, TFF, TUC) USS Reliant (WOK) USS Enterprise (TOS, TMP, SFS) | Chief security officer (SFS, TVH, TFF, TUC) First officer (WOK) Weapons officer (TMP) Navigator (TOS) | Human | |
| Anton Yelchin | ST09, STID, STB | Ensign (ST09, STID, STB) | USS Enterprise (ST09, STID, STB) | Navigator (ST09, STID, STB) | |||
| Una Chin-Riley ('Number One') | Majel Barrett | "The Cage" Season 2 (DSC) Seasons 1-2 (SNW) | Commander Lt. Commander | USS Enterprise | First officer | Illyrian | |
| Rebecca Romijn | |||||||
| J. M. Colt | Laurel Goodwin | "The Cage" | Yeoman | USS Enterprise | Yeoman | Human | |
| Katrina Cornwell | Jayne Brook | Seasons 1-2 (DSC) | Vice Admiral | Starfleet Command | Admiral of Starfleet | Human | |
| Kimara Cretak | Adrienne Barbeau | Season 7 (DS9) | Senator | Deep Space 9 | Romulan representative | Romulan | |
| Megan Cole | |||||||
| Beverly Crusher | Gates McFadden | Seasons 1,3–7 (TNG) Movies (GEN, FCT, INS, NEM) Season 3 (PIC) | Admiral Civilian Commander | Starfleet Command SS Eleos XII USS Enterprise-E (FCT, INS, NEM) USS Enterprise-D (S1,3-7, GEN) Starfleet Command (S2) | Head of Starfleet Medical (PIC S5) Civilian doctor associated with the humanitarian organization Mariposas (PIC S5, LOW S4) Chief medical officer (S1, 3–7, movies) Head of Starfleet Medical (S2) | Human | |
| Jack Crusher | Ed Speleers | Season 3 (PIC) | Ensign Civilian | USS Enterprise NCC-1701-G SS Eleos XII | Special counselor to the captain Civilian associated with the humanitarian organization Mariposas | Human | |
| Wesley Crusher | Seasons 1–4,5,7 (TNG) Season 2 (PIC S2) Movies (NEM) | Civilian (PIC S2) Lieutenant, JG (NEM) Cadet (S4-7) Ensign (S3-4) Ensign (acting) (S1-3) Civilian (S1) | USS Titan (NEM) Starfleet Academy (S4-7) USS Enterprise-D (S1-4) | Traveler (PIC S2) Engineering officer (NEM) Starfleet cadet (S4-7) Helmsman (S1-4) | Human | ||
| Hugh Culber | Wilson Cruz | Season 1–5(DSC) | USS Discovery | Doctor | Human | ||
| Jal Culluh | Anthony De Longis | Seasons 1–3 (VOY) | First Maje | Kazon-Nistrim | Leader of Kazon-Nistrim | Kazon | |
| Elizabeth Cutler | Kellie Waymire | Season 1 (ENT) | Crewman | Enterprise NX-01 | Entomologist | Human | |
| Leonardo da Vinci | John Rhys-Davies | Seasons 3–4 (VOY) | None | USS Voyager Program | Holographic character | Hologram | |
| Damar | Casey Biggs | Seasons 4–7 (DS9) | Legate (S7) Gul (S6-7) Glinn (S4-6) | Cardassia Prime CMS Groumall (S4) | Leader of Cardassian Union (S7) Dominion leader (S6-7) Vigilante (S5) Cardassian officer (S4) | Cardassian | |
| Daniels | Matt Winston | Seasons 1–4 (ENT) | Crewman | Unknown | Temporal agent | Human | |
| Data | Brent Spiner | Seasons 1–7 (TNG) Movies (GEN, FCT, INS, NEM) Season 1 (PIC) | Lt. Commander | USS Enterprise-E (FCT, INS, NEM) USS Enterprise-D (S1-7, GEN) | Chief operations officer (TNG, GEN, FCT, INS, NEM) | Android | |
| Ezri Dax | Nicole de Boer | Season 7 (DS9) | Lieutenant, JG (S7) Ensign (S7) | Deep Space 9 | Counselor | Trill | |
| Jadzia Dax | Terry Farrell | Seasons 1–6 (DS9) | Lt. Commander (S4-6) Lieutenant (S1-3) | Deep Space 9 | Chief science officer | Trill | |
| Degra | Randy Oglesby | Season 3 (ENT) | Civilian | Xindi Council | Scientist | ||
| Keyla Detmer | Emily Coutts | Seasons 1–3 (DSC) | Lieutenant (S1-2) Lieutenant, JG (S1) | USS Discovery (S1-2) USS Shenzhou (S1) | Helmsman | Human | |
| The Doctor | Robert Picardo | Seasons 1–7 (VOY) | None | USS Voyager | Chief medical officer | Hologram | |
| Dolim | Scott MacDonald | Season 3 (ENT) | Commander | Xindi Council | Council member | ||
| Dukat | Marc Alaimo | Seasons 1–7 (DS9) | Gul | Cardassia Prime | Religious leader (S6-7) Leader of Cardassia (S5) Vigilante (S4-5) Freighter commander (S4) Cardassian officer (S1-4) | Cardassian | |
| Michael Eddington | Kenneth Marshall | Seasons 3–5 (DS9) | Civilian (S4-5) Lt. Commander (S3-4) | Deep Space 9 (S3-4) | Maquis (S7) Security officer (S5-7) | Human | |
| Elnor | Evan Evagora | Seasons 1-2 (PIC) | Cadet (S2) Qowat Milat (S1) | USS Excelsior (S2) Vashti resident (S1) | Starfleet cadet (S2) Qalankhkai to Picard (S1) | Romulan | |
| Kova Rin Esmar | Jin Maley | Season 3 (PIC) | Ensign | USS Enterprise NCC-1701-G (PIC S3) USS Titan (NCC-80102-A) (PIC S3) | Communications officer | Haliian | |
| Evek | Richard Poe | Season 7 (TNG) Season 2 (DS9) Season 1 (VOY) | Gul | CMS Vetar | Commanding officer | Cardassian | |
| Female Changeling | Salome Jens | Seasons 3–4,6–7 (DS9) | None | Cardassia Prime | Leader of Dominion | Changeling | |
| Vic Fontaine | James Darren | Seasons 6–7 (DS9) | None | Deep Space 9 Program | Holographic entertainer | Hologram | |
| Maxwell Forrest | Vaughn Armstrong | Seasons 1–4 (ENT) | Vice Admiral | Starfleet Command | NX Project | Human | |
| Alonzo Freeman | Phil LaMart | Seasons 1-4 (LOW) | Admiral | Starfleet Command | Flag officer | Human | |
| Carol Freeman | Dawnn Lewis | Seasons 1-4 (LOW) | Captain | USS Cerritos | Commanding officer | Human | |
| Elim Garak | Andrew Robinson | Seasons 1–7 (DS9) | Civilian | Deep Space 9 resident | Tailor | Cardassian | |
| Garrison | Adam Roarke | "The Cage" | Chief petty officer | USS Enterprise | Communications officer | Human | |
| Philippa Georgiou | Michelle Yeoh | Seasons 1-3 (DSC) Season 1 (S31) | Captain (S1) | NCIA-93 (S2) Section 31 (S1-3) USS Shenzhou (S1) | Intelligence operative (S1-3) Emperor, Mirror Universe (S1) Commanding officer (S1) | Human | |
| Sonya Gomez | Lycia Naff | Season 2 (TNG) Season 2 (LOW) | Ensign | USS Enterprise-D | Engineering officer | Human | |
| Gowron | Robert O'Reilly | Seasons 4–6 (TNG) Seasons 3–7 (DS9) | Chancellor | Klingon High Council | Chancellor of Klingon Empire | Klingon | |
| Amanda Grayson | Jane Wyatt | Season 2 (TOS) Movies (TVH, TFF) | Civilian | Vulcan resident | Teacher | Human | |
| Majel Barrett | Seasons 1 (TAS) | ||||||
| Winona Ryder | ST09 | ||||||
| Mia Kirshner | Season 1 (DSC) Season 2 (SNW) | ||||||
| Guinan | Whoopi Goldberg | Seasons 2–6 (TNG) Movies (GEN, NEM) Season 2 (PIC) | Civilian | USS Enterprise-D | Bartender | El-Aurian | |
| Gwyndala "Gwyn" | Ella Purnell | Season 1 (PRO) | Civilian | USS Protostar NX-76884 | Communications officer | Vau N'Akat | |
| J. Hayes | Steven Culp | Season 3 (ENT) | Major | Enterprise NX-01 | MACO officer | Human | |
| Erika Hernandez | Ada Maris | Season 4 (ENT) | Captain | Columbia NX-02 | Commanding officer | Human | |
| Hogan | Simon Billig | Seasons 2–3 (VOY) | Ensign (provisional) | USS Voyager | Engineering officer Maquis (previous) | Human | |
| Mr. Homn | Carel Struycken | Seasons 1–5 (TNG) | Civilian | Betazed resident | Servant | Unknown | |
| Hugh | Jonathan Del Arco | Seasons 5–7 (TNG) Season 1 (PIC) | None | Romulan reclamation site | Borg drone (TNG) Director of Romulan reclamation site (PIC) | Borg (TNG) Human/xB (PIC) | |
| Icheb | Manu Intiraymi | Seasons 6–7 (VOY) | Civilian (VOY) | USS Voyager resident (VOY) | Astrometrics (VOY) | Borg (VOY S6) Brunali/xB (VOY S6-7, PIC) | |
| Casey King | Season 1 (PIC) | Lieutenant (PIC) | USS Coleman (PIC) | Command officer (PIC) | |||
| Ishka | Cecily Adams | Seasons 3, 5–7 (DS9) | Civilian | Ferenginar resident | Philanthropist | Ferengi | |
| Andrea Martin | |||||||
| Kathryn Janeway | Kate Mulgrew | Seasons 1–7 (VOY) Movies (NEM) Season 1 (PRO) | Vice Admiral (NEM) Captain (VOY) | Starfleet Command (NEM) USS Dauntless (PRO) USS Voyager (VOY) | Starfleet Admiral (NEM) Commanding officer (VOY) | Human | |
| Jannar | Rick Worthy | Season 3 (ENT) | Civilian | Xindi Council | Scientist | ||
| Michael Jonas | Raphael Sbarge | Season 2 (VOY) | Crewman (provisional) | USS Voyager | Engineering officer Maquis (previous) | Human | |
| Agnes Jurati | Alison Pill | Seasons 1-2 (PIC) | Civilian | Daystrom Institute | Cyberneticist | Human | |
| K'Ehleyr | Suzie Plakson | Seasons 2, 4 (TNG) | Ambassador | Earth resident | Federation Ambassador | Klingon/Human | |
| Kes | Jennifer Lien | Seasons 1–4, 6 (VOY) | Civilian | USS Voyager | Medic Aeroponics | Ocampa | |
| Harry Kim | Garrett Wang | Seasons 1–7 (VOY) | Ensign | USS Voyager | Chief operations officer | Human | |
| Kira Nerys | Nana Visitor | Seasons 1–7 (DS9) | Colonel (S7) Commander (S7) Major (S1-6) | Deep Space 9 | Commanding officer (S7) First officer (S1-7) | Bajoran | |
| George Kirk | Chris Hemsworth | ST09 | Captain | USS Enterprise (ST09) | Commanding officer | Human | |
| George Samuel "Sam" Kirk Jr. | William Shatner | Season 1(TOS)(Operation -- Annihilate!) Seasons 1–2 (SNW) | Lieutenant, JG | Deneva, USS Enterprise | Xenoanthropologist, research biologist | Human | |
| Dan Jeannotte | |||||||
| James T. Kirk | William Shatner | Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, WOK, SFS, TVH, TFF, TUC, GEN, ST09, STID, STB) Season 5 (DS9) Seasons 1-2 (SNW) | Captain (TOS, TAS, TFF, TUC, GEN, STID, STB) Rear Admiral (TMP, WOK, SFS, TVH) Cadet (ST09)Lieutenant (SNW) | USS Enterprise-A (TVH, TFF, TUC) USS Enterprise (TOS, TAS, TMP, WOK, SFS, ST09, STID, STB, SNW) USS Farragut (SNW) | Commanding officer (TOS, TAS, TMP, WOK, SFS, TVH, TFF, TUC, STID, STB) First officer (ST09, SNW) | Human | |
| Chris Pine | |||||||
| Paul Wesley | |||||||
| Kol | Kenneth Mitchell | Season 1 (DSC) | General, Klingon Empire | Klingon High Council | Council Member | Klingon | |
| Kor | John Colicos | Season 1 (TOS) Season 1 (TAS) Seasons 2, 4, 7 (DS9) | Dahar Master (DS9) Commander, Klingon Empire (TOS, TAS) | Klingon Defense Force (DS9) IKS Klothos (TOS, TAS) | Defence officer (DS9) Commanding officer (TOS, TAS) | Klingon | |
| Kovich | David Cronenberg | Seasons 3-5 (DSC) | Federation official | Federation headquarters | Scientist in cognitive science, with specialties in artificial sentience and intelligence | Human | |
| Kurn | Tony Todd | Seasons 3–5 (TNG) Season 4 (DS9) | Crewman, Bajoran Militia (DS9) Captain, Klingon Empire (TNG) | Deep Space 9 (DS9) IKS Hegh'ta (TNG) | Security officer (DS9) Commanding officer (TNG) | Klingon | |
| Alandra La Forge | Mica Burton | Season 3 (PIC) | Ensign | Fleet Museum | Engineer | Human | |
| Geordi La Forge | LeVar Burton | Seasons 1–7 (TNG) Movies (GEN, FCT, INS, NEM) Season 5 (VOY) Season 3 (PIC) | Commodore (S3, PIC) Lt. Commander (S3-7, movies) Lieutenant (S2) Lieutenant, JG (S1) | Federation Fleet Museum (S3, PIC) USS Enterprise-E (FCT, INS, NEM) USS Enterprise-D (S1-7, GEN) | Curator (S3, PIC) Chief engineer (S2-7, movies) Helmsman (S1) | Human | |
| Sidney La Forge | Ashlei Sharpe Chestnut | Season 3 (PIC) | Enterprise NCC-1701-G USS Titan (NCC-80102-A) | Helmsman | Human | ||
| Laris | Orla Brady | Seasons 1-2 (PIC) | Civilian | Earth resident | Vineyard Manager | Romulan | |
| Leeta | Chase Masterson | Seasons 3–7 (DS9) | Civilian | Deep Space 9 resident | Dabo Girl | Bajoran | |
| Leland | Alan van Sprang | Season 2 (DSC) | Captain | NCIA-93 Section 31 | Commanding officer Intelligence Operative | Human | |
| Li Nalas | Richard Beymer | Season 2 (DS9) | Navarch | Deep Space 9 | Liaison officer | Bajoran | |
| Linus | David Benjamin Tomlinson | Seasons 2–3 (DSC) | Lieutenant, JG | USS Discovery | Science officer | Saurian | |
| Gabriel Lorca | Jason Isaacs | Season 1 (DSC) | Captain | USS Discovery | Commanding officer | Human | |
| Lore | Brent Spiner | Season 3 (PIC) Seasons 1, 4, 6–7 (TNG) | Civilian | Android | |||
| L'Rell | Mary Chieffo | Seasons 1–2 (DSC) | Chancellor | Klingon High Council | Chancellor of Klingon Empire | Klingon | |
| Lursa | Barbara March | Seasons 4–5, 7 (TNG) Movies (GEN) Season 1 (DS9) | Captain, Klingon Empire | Bird of Prey | Commanding officer | Klingon | |
| Maihar'du | Tiny Ron Taylor | Seasons 1–3, 5–7 (DS9) | Civilian | Ferenginar resident | Attendant to Grand Nagus | Hupyrian | |
| Mallora | Tucker Smallwood | Season 3 (ENT) | Civilian | Xindi Council | Chairman | Xindi-Primate | |
| Carol Marcus | Bibi Besch | Movies (WOK, SFS, STID) | Civilian (WOK, SFS) Lieutenant (STID) | Project Genesis (WOK, SFS) USS Enterprise (STID) | Biologist | Human | |
| Alice Eve | |||||||
| Beckett Mariner | Tawny Newsome | Seasons 1-4 (LOW) Season 2 (SNW) (Those Old Scientists) | Ensign (Seasons 1-3) Lieutenant, JG (Season 4) | USS Cerritos | Human | ||
| Martok | J. G. Hertzler | Seasons 4–7 (DS9) | Chancellor (S7) General, Klingon Empire (S4-7) | Deep Space 9 IKS Rotarran | Chancellor of Klingon Empire (S7) Commander of Klingon Forces (S4-7) | Klingon | |
| Travis Mayweather | Anthony Montgomery | Seasons 1–4 (ENT) | Ensign | Enterprise NX-01 | Helmsman | Human | |
| Joseph M'Benga | Booker Bradshaw | Seasons 2-3 (TOS) Seasons 1–2 (SNW) | Commander | Doctor Chief medical officer, | Human | ||
| Babs Olusanmokun | |||||||
| Rukiya M'Benga | Sage Arrindell | Season 1 (SNW) | Civilian | USS Enterprise | Civilian | Human | |
| Mukambe Simamba | |||||||
| Leonard McCoy | DeForest Kelley | Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, WOK, SFS, TVH, TFF, TUC, ST09, STID, STB) Season 1 (TNG) Season 5 (DS9) | Admiral (TNG) Commander (TMP, WOK, SFS, TVH, TFF, TUC) Lt. Commander (TOS, TAS, ST09, STID, STB) | USS Enterprise-A (TVH, TFF, TUC) USS Enterprise (TOS, TAS, TMP, WOK, SFS, ST09, STID, STB) | Chief medical officer | Human | |
| Karl Urban | |||||||
| Mezoti | Marley S. McClean | Seasons 6–7 (VOY) | Civilian | USS Voyager Passenger | Norcadian | ||
| Migleemo | Paul F. Tompkins | Seasons 1-4 (LOW) | Commander? | USS Cerritos | Ship's Counselor | Unnamed ornithoid species | |
| Mila | Julianna McCarthy | Seasons 3,7 (DS9) | Civilian | Cardassia resident | Housekeeper | Cardassian | |
| Mora Pol | James Sloyan | Seasons 2,5 (DS9) | Civilian | Bajor resident | Scientist | Bajoran | |
| Morn | Mark Allen Shepherd | Seasons 1–7 (DS9) Season 1 (VOY) | Civilian | Deep Space 9 resident | Courier | Lurian | |
| Mot | Ken Thorley | Seasons 5–6 (TNG) | Civilian | USS Enterprise-D | Barber | Bolian | |
| Harry Mudd | Roger C. Carmel | Seasons 1–2 (TOS) Season 1 (TAS) Season 1 (DSC) Season 1 (ST) | Civilian | Smuggler | Human | ||
| Rainn Wilson | |||||||
| Matthew Arliss Mura | Joseph Lee | Season 3 (PIC) | Lieutenant | USS Enterprise NCC-1701-G (PIC S3) USS Titan (NCC-80102-A) (PIC S3) | Tactical officer | Bajoran | |
| Murf | Dee Bradley Baker | Season 1 (PRO) | Civilian | USS Protostar NX-76884 | Civilian/Security officer | Mellanoid slime worm | |
| Raffi Musiker | Michelle Hurd | Seasons 1-3 (PIC) | Commander (S2) Civilian (S1) | Enterprise NCC-1701-G (S3) Starfleet Intelligence (S3) USS Excelsior (S2) | First officer Undercover intelligence agent Chief operations officer (S2) | Human | |
| Harry Treadaway | Season 1 (PIC) | Zhat Vash Operative | Romulan | ||||
| Naya | Victoria Sawal | Season 5 (DSC) | Lieutenant | USS Discovery NCC 1031-A (DSC S5) | Operations officer | Human | |
| Alynna Nechayev | Natalia Nogulich | Seasons 6–7 (TNG) Seasons 2–3 (DS9) | Fleet Admiral | Starfleet Command | Admiral of Starfleet | Human | |
| Neelix | Ethan Phillips | Seasons 1–7 (VOY) | Ambassador (S7) Civilian (S1-7) | Talaxian Asteroid Colony (S7) USS Voyager (S1-7) | Federation Ambassador (S7) Chef (S1-7) | Talaxian | |
| Nhan | Rachael Ancheril | Seasons 2-3 (DSC) | Commander | USS Discovery (S2-3) USS Enterprise (S2) | Chief security officer | Barzan | |
| Susan Nicoletti | Christine Delgado | Seasons 1–4,7 (VOY) | Lieutenant, JG | USS Voyager | Engineering officer | Human | |
| Eva Nilsson | Sara Mitich | Seasons 2-4 (DSC) | Lieutenant | USS Voyager NCC 74656 (DSC S5) USS Discovery | Operations officer | Human | |
| Nog | Aron Eisenberg | Seasons 1–7 (DS9) | Lieutenant, JG (S7) Ensign (S6-7) Cadet (S4-5) Civilian (S1-4) | Deep Space 9 Starfleet Academy (S4-5) | Operations officer (S6-7) Starfleet cadet (S4-5) Bar employee (S1-4) Student (S1-4) | Ferengi | |
| Khan Noonien Singh | Ricardo Montalbán | Season 1 (TOS) Movies (WOK, STID) (SNW S2)) (Tomorrow and Tomorrow and Tomorrow) | Civilian | SS Botany Bay (TOS) | Superhuman | Human Augment | |
| Benedict Cumberbatch | |||||||
| Desmond Sivan (as a child) | |||||||
| La'an Noonien-Singh | Christina Chong (primary) | Seasons 1-2 (SNW) | Lieutenant | USS Enterprise | Chief security officer | Human | |
| Kashimuro Nozawa | John Tampoya | Seasons 1–4,7 (VOY) | Ensign | USS Voyager | Operations officer | Human | |
| Keiko O'Brien | Rosalind Chao | Seasons 4–6 (TNG) Seasons 1–7 (DS9) | Civilian | Deep Space 9 (DS9) USS Enterprise-D (TNG) | Teacher/Botanist (DS9) Botanist (TNG) | Human | |
| Miles O'Brien | Colm Meaney | Seasons 1–7 (TNG) Seasons 1–7 (DS9) | Chief petty officer | Starfleet Academy (DS9 S7) Deep Space 9 (DS9 S1-7) USS Enterprise-D (TNG S1-6) | Academy professor (DS9 S7) Chief of operations (DS9 S1-7) Transporter chief (TNG S2-6) Helmsman (TNG S1) | Human | |
| Molly O'Brien | Hana Hatae | Seasons 1–7 (DS9) | Civilian | Deep Space 9 resident | Student | Human | |
| Odo | René Auberjonois | Seasons 1–7 (DS9) | Constable (unofficial) | Deep Space 9 | Chief of security | Changeling | |
| Alyssa Ogawa | Patti Yasutake | Seasons 3–7 (TNG) Movies (GEN, FCT) | Lieutenant, JG (S7, movies) Ensign (S3-7) | USS Enterprise-E (FCT) USS Enterprise-D (S3-7, GEN) | Nurse | Human | |
| Oh | Tamlyn Tomita | Season 1 (PIC) | Commodore | Starfleet Command | Head of Starfleet Security | Vulcan | |
| Opaka Sulan | Camille Saviola | Seasons 1–2,4 (DS9) | Kai | Bajor resident | Bajoran religious leader (S1) | Bajoran | |
| Joann Owosekun | Oyin Oladejo | Seasons 1–5 (DSC) | Lieutenant, JG | USS Discovery | Operations officer | Human | |
| Owen Paris | Warren Munson Richard Herd | Seasons 2,5–7 (VOY) | Admiral | Starfleet Command | Pathfinder Project | Human | |
| Tom Paris | Robert Duncan McNeill | Seasons 1–7 (VOY) Season 1 (LOW) | Lieutenant (LOW S1) Lieutenant, JG (S1-7) Ensign (S5-6) | USS Voyager | Helmsman | Human | |
| Phlox | John Billingsley | Seasons 1–4 (ENT) | Civilian | Enterprise NX-01 | Chief medical officer | Denobulan | |
| Jean-Luc Picard | Patrick Stewart | Seasons 1–7 (TNG) Movies (GEN, FCT, INS, NEM) Season 1 (DS9) Seasons 1-3 (PIC) | Admiral (PIC) Captain (TNG, movies) | Earth resident (PIC) USS Enterprise-E (FCT, INS, NEM) USS Enterprise-D (TNG S1-7, GEN) | Commanding officer (TNG, movies) | Human | |
| Renée Picard | Penelope Mitchell | Season 2 (PIC) | Civilian | Europa Mission | NASA Astronaut | Human | |
| Christopher Pike | Jeffrey Hunter | "The Cage" Season 1 (TOS) | Admiral (STID) Captain (TC, TOS, ST09, DSC) | Starfleet Command (STID) USS Enterprise (TC, ST09, DSC) | Starfleet Admiral (STID) Commanding officer (TC, ST09, DSC) | Human | |
| Bruce Greenwood | ST09, STID | ||||||
| Anson Mount | Season 2 (DSC) Seasons 1-2 (SNW)re | ||||||
| Jankom Pog | Jason Mantzoukas | Season 1 (PRO) | Civilian | USS Protostar NX-76884 | Engineer | Tellarite | |
| Tracy Pollard | Raven Dauda | Seasons 1–5 (DSC) | Lieutenant, JG | USS Discovery | Medical officer | Human | |
| Katherine Pulaski | Diana Muldaur | Season 2 (TNG) | Commander | Chief medical officer | Human | ||
| Q | John de Lancie | Seasons 1–4, 6–7 (TNG) Season 1 (DS9) Seasons 2–3, 7 (VOY) Season 1 (LOW) Season 2 (PIC) | None | Q Continuum resident | Q Continuum | Q | |
| Quark | Armin Shimerman | Season 7 (TNG) Seasons 1–7 (DS9) Season 1 (VOY) | Civilian | Deep Space 9 resident | Bar Owner | Ferengi | |
| Teresa Ramirez | Sol Rodriguez | (PIC S2) | Civilian | Earth resident | Medical doctor associated with the humanitarian organization Mariposas | Human | |
| Ricardo Ramirez | Steve Gutierrez | (PIC S2) | Civilian | Earth resident | Student | Human | |
| Janice Rand | Grace Lee Whitney | Season 1 (TOS) Movies (TMP, TVH, TUC) Season 3 (VOY) | Commander (TUC) Chief petty officer (TVH) Crewman (TMP) Yeoman (TOS) | USS Excelsior (TUC) Starfleet Command (TVH) USS Enterprise (TOS, TMP) | First officer (TUC) Starfleet Command officer (TVH) Transporter chief (TMP) Yeoman (TOS) | Human | |
| Jack Ransom | Jerry O'Connell | Seasons 1-4 (LOW) | Commander | USS Cerritos | First officer | Human | |
| Rayner | Callum Keith Rennie | Season 5 (DSC) | Commander Captain | USS Discovery NCC-1031-A USS Antares | First officer Commanding officer | Kellerun | |
| Rebi | Cody Wetherill | Seasons 6–7 (VOY) | Civilian | USS Voyager Passenger | Wysanti/xB | ||
| Malcolm Reed | Dominic Keating | Seasons 1–4 (ENT) | Lieutenant | Enterprise NX-01 | Tactical officer | Human | |
| Dal R'El | Brett Gray | Season 1 (PRO) | Civilian | USS Protostar NX-76884) | Captain | Augment (Artificially created hybrid of many species) | |
| Jet Reno | Tig Notaro | Seasons 2-3 (DSC) | Lt. Commander | USS Discovery (S2-3) USS Hiawatha (S2) | Chief Engineer | Human | |
| Gen Rhys | Patrick Kwok-Choon | Seasons 1-3 (DSC) | Lieutenant | USS Discovery | Tactical officer | Human | |
| William Riker | Jonathan Frakes | Seasons 1–7 (TNG) Movies (GEN, FCT, INS, NEM) Season 2 (VOY) Season 4 (ENT) Seasons 1,3 (PIC) Season 1 (LOW) | Captain pro tem (PIC S3) Captain (NEM, PIC, LOW) Commander (TNG S1-7, movies) | USS Titan (NCC-80102-A) USS Zheng He (PIC S1) USS Titan (NEM, LOW S1) USS Enterprise-E (FCT, INS, NEM) USS Enterprise-D (TNG S1-7, GEN) | Commanding officer (NEM, PIC S1, LOW S1) First officer (TNG S1-7, movies) | Human | |
| Laira Rillak | Chelah Horsdal | Seasons 4-5 (DSC) | Civilian | None | President of the United Federation of Planets | Human/Bajoran/Cardassian | |
| Santiago Cabrera | Seasons 1-2 (PIC) | Captain (S2) Civilian (S1) | USS Stargazer (S2) La Sirena (S1) | Commanding officer (S2) Civilian Starship Captain (S1) | Human | ||
| Narissa Rizzo | Peyton List | Season 1 (PIC) | Zhat Vash Operative | Romulan | |||
| Ro Laren | Michelle Forbes | Seasons 5–7 (TNG) | Lieutenant (S7) Ensign (S5-6) | USS Enterprise-D | Maquis (S7) Helmsman (S5-7) | Bajoran | |
| Rok-Takh | Rylee Alazraqui | Season 1 (PRO) | Civilian | USS Protostar NX-76884 | Science officer | Brikar | |
| Rom | Max Grodénchik | Seasons 1–7 (DS9) | Grand Nagus (S7) Crewman (S4-7) Civilian (S1-4) | Deep Space 9 | Grand Nagus (S7) Maintenance Engineer (S4-7) Bar employee (1–4) | Ferengi | |
| William Ross | Barry Jenner | Seasons 6–7 (DS9) | Vice Admiral | Deep Space 9 | Military commander | Human | |
| Michael Rostov | Joseph Will | Seasons 1–2 (ENT) | Crewman | Enterprise NX-01 | Engineering officer | Human | |
| Alexander Rozhenko | Jon Paul Steuer | Seasons 4–7 (TNG) Season 6 (DS9) | Crewman, Klingon Empire (DS9) Civilian (TNG) | IKS Rotarran (DS9) | Weapons officer (DS9) | Klingon/Human | |
| Brian Bonsall | |||||||
| Marc Warden | |||||||
| Samanthan "Sam" Rutherford | Eugene Cordero | Seasons 1-4 (LOW) | USS Cerritos | Science officer | Human, cybernetically enhanced | ||
| Saavik | Kirstie Alley | Movies (WOK, SFS, TVH) | Lieutenant, JG | USS Grissom (SFS, TVH) USS Enterprise (WOK) | Science officer (SFS, TVH) Navigator (WOK) | Vulcan/Romulan | |
| Robin Curtis | |||||||
| Sarek | Mark Lenard | Season 2 (TOS) Seasons 1 (TAS) Movies (TMP, SFS, TVH, TUC, ST09) Seasons 3, 5 (TNG) Seasons 1–2 (DSC) | Ambassador | Vulcan resident | Federation Ambassador | Vulcan | |
| Ben Cross | |||||||
| James Frain | |||||||
| Saru | Doug Jones | Seasons 1–5 (DSC) Season 1 (ST) | Commander Captain Federation Ambassador | Federation Headquarters (DSC S5) USS Discovery (S1-3) USS Shenzhou (S1) | Federation Ambassador (DSC S5) First officer (S4-5) Captain (S3) First officer (S1-2) Science officer (S1) | Kelpien | |
| Hoshi Sato | Linda Park | Seasons 1–4 (ENT) | Ensign | Enterprise NX-01 | Communications officer | Human | |
| Montgomery Scott | James Doohan | Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, WOK, SFS, TVH, TFF, TUC, GEN, ST09, STID, STB) Season 6 (TNG) Season 5 (DS9) Season 2 (SNW) | Captain (SFS, TVH, TFF, TUC, GEN, TNG) Commander (TMP, WOK) Lt. Commander (TOS, TAS, ST09, STID, STB) Lieutenant, Junior Grade (SNW S2) | USS Enterprise-A (TVH, TFF, TUC) USS Enterprise (TOS, TAS, TMP, WOK, SFS, ST09, STID, STB) USS Stardiver | Chief Engineer | Human | |
| Simon Pegg | |||||||
| Martin Quinn | |||||||
| Sela | Denise Crosby | Seasons 4–5 (TNG) | Commander, Romulan Empire | Unknown | Romulan officer | Romulan/Human | |
| Seska | Martha Hackett | Seasons 1–3,7 (VOY) | None (S1-3) Ensign (provisional) (S1) | Kazon-Nistrim (S1-3) USS Voyager (S1) | Kazon Affiliate (S1-3) Engineering officer (S1) Science officer (S1) Maquis Infiltrator (previous) | Cardassian | |
| Seven of Nine | Jeri Ryan | Seasons 1-3 (PIC) Seasons 4–7 (VOY) | Captain (PIC S3) Commander (PIC S3) Civilian (PIC S1-2) (VOY S4-7) | Enterprise NCC-1701-G (PIC S3) USS Titan (NCC-80102-A) (PIC S3) La Sirena (PIC S2) USS Voyager (VOY S4-7) | Captain (PIC S3) First officer (PIC S3) Vigilante (PIC S1-2) Astrometrics (VOY S4-7) | Human/xB | |
| Shakaar Edon | Duncan Regehr | Seasons 3–5 (DS9) | First Minister | Bajor resident | First Minister of Bajor | Bajoran | |
| Liam Shaw | Todd Stashwick | Season 3 (PIC) | Captain | USS Titan (NCC-80102-A) (PIC S3) | Commanding officer | Human | |
| Shaxs | Fred Tatasciore | Seasons 1-4 (LOW) | Lieutenant | USS Cerritos | Chief security officer | Bajoran | |
| Thy'lek Shran | Jeffrey Combs | Seasons 1–4 (ENT) | General | Kumari | Andorian Imperial Guard | Andorian | |
| Jennifer Sh'reyan | Lauren Lapkus | Seasons 1-4 (LOW) | Ensign | USS Cerritos | Counselor | Andorian | |
| Silik | John Fleck | Seasons 1–4 (ENT) | Senior official | Suliban Cabal | Terrorist | ||
| Benjamin Sisko | Avery Brooks | Seasons 1–7 (DS9) | Captain (S3-7) Commander (S1-3) | Deep Space 9 | Commanding officer | Human | |
| Jake Sisko | Cirroc Lofton | Seasons 1–7 (DS9) | Civilian | Deep Space 9 resident | Journalist (S5-7) Student (S1-5) | Human | |
| Jennifer Sisko | Felecia M. Bell | Seasons 1,3–4 (DS9) | Lieutenant (S1) | USS Saratoga (S1) | Starfleet officer (S1) | Human | |
| Joseph Sisko | Brock Peters | Seasons 4,6–7 (DS9) | Civilian | Earth resident | Restaurant Owner | Human | |
| Sarah Sisko | Deborah Lacey | Season 7 (DS9) | Civilian | Earth resident | Holophotographer | Human | |
| Luther Sloan | William Sadler | Seasons 6–7 (DS9) | None | Section 31 | Intelligence Operative | Human | |
| Kore Soong | Isa Briones | Season 2 (PIC) | Civilian | Resident of Earth | Traveler | Human | |
| Soval | Gary Graham | Seasons 1–4 (ENT) | Ambassador | Earth | Vulcan Ambassador to Earth | ||
| Spock | Leonard Nimoy | "The Cage" Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, WOK, SFS, TVH, TFF, TUC, ST09, STID, STB) Season 5 (TNG) Season 5 (DS9) Season 2 (DSC) Season 1 (SNW) | Ambassador (TNG, ST09, STID) Captain (WOK, SFS, TVH) Commander (TC, TOS, TAS, TMP, ST09, STID, STB, DSC) | New Vulcan resident (STID) USS Enterprise-A (TVH, TFF, TUC) USS Enterprise (TC, TOS, TAS, TMP, ST09, STID, STB, DSC) Instructor (ST09) | Federation Ambassador (TNG, ST09, STID) First officer (TC, TOS, TAS, movies) Science officer (TC, TOS, TAS, ST09, STID, STB, DSC) | Vulcan/Human | |
| Zachary Quinto | |||||||
| Ethan Peck | |||||||
| Paul Stamets | Anthony Rapp | Season 1-5 (DSC) | Commander Lt. Commander (S2) Lieutenant (S1) | USS Discovery | Science officer | Human | |
| Lon Suder | Brad Dourif | Seasons 2–3 (VOY) | Crewman (provisional) | USS Voyager | Engineering officer Maquis (previous) | Betazoid | |
| Hikaru Sulu | George Takei | Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, WOK, SFS, TVH, TFF, TUC, ST09, STID, STB) Season 3 (VOY) | Captain (TUC) Commander (WOK, SFS, TVH, TFF) Lt. Commander (TMP) Lieutenant (TOS, TAS, ST09, STID, STB) | USS Excelsior (TUC) USS Enterprise-A (TVH, TFF, TUC) USS Enterprise (TOS, TAS, TMP, WOK, SFS, ST09, STID, STB) | Commanding officer (TUC) Helmsman (TOS, TAS, TMP, WOK, SFS, TVH, TFF, ST09, STID, STB) | Human | |
| John Cho | |||||||
| Enabran Tain | Paul Dooley | Seasons 2–3,5 (DS9) | None | Cardassia resident | Leader of Obsidian Order | Cardassian | |
| Adira Tal | Blu del Barrio | Seasons 3-5 (DSC) | USS Discovery (S3-5) | Science officer (DSC S3-5) | Human | ||
| Gray Tal | Ian Alexander | Seasons 3-5 (DSC) | Civilian | Trill (DSC S4-5) USS Discovery (S3-4) | Guardian (DSC S5) Civilian (DSC S3-4) | Trill | |
| T'Ana | Gillian Vigman | Seasons 1-4 (LOW) | Commander | USS Cerritos | Chief medical officer | Caitian | |
| D'Vana Tendi | Noël Wells | Seasons 1-4 (LOW) | USS Cerritos | Science officer | Orion | ||
| Sylvia Tilly | Mary Wiseman | Season 1–5 (DSC) Season 1 (ST) | Lieutenant, JG (S3-5) Ensign (S2) Cadet (S1) | Starfleet Academy (S4-5) USS Discovery (S1-4) | Instructor (S4-5) Acting first officer (S3) Engineering officer (S2) Starfleet cadet (S1) | Human | |
| T'Lyn | Danielle Ruiz | Seasons 2-4 (LOW) | USS Cerritos VCF Sh'vhal | Science officer | Vulcan | ||
| Tomalak | Andreas Katsulas | Seasons 3–4,7 (TNG) | Commander, Romulan Empire | IRW Terix | Commanding officer | Romulan | |
| Tora Ziyal | Melanie Smith | Seasons 4–6 (DS9) | Civilian | Deep Space 9 resident | Artist | Bajoran/Cardassian | |
| Cyia Batten | |||||||
| B'Elanna Torres | Roxann Dawson | Seasons 1–7 (VOY) | Lieutenant, JG (provisional) | USS Voyager | Chief Engineer (S1-7) Maquis (S1) | Klingon/Human | |
| T'Pau | Celia Lovsky | Season 2 (TOS) (Amok Time) (ENT S4) | Civilian | None | Civilian | Vulcan | |
| Kara Zediker | |||||||
| T'Pol | Jolene Blalock | Seasons 1–4 (ENT) | Commander (S4) SubCommander (S1-4) | Enterprise NX-01 | First officer Science officer | Vulcan | |
| T'Pring | Arlene Martel | Season 2 (TOS) (Amok Time) (SNW S1-2) | Civilian | None | Civilian | Vulcan | |
| Gia Sandhu | |||||||
| The Traveler | Eric Menyuk | Seasons 1,4,7 (TNG) | Civilian | Tau Alpha C resident | Unknown | ||
| T'Rina | Tara Rosling | Seasons 3-5 (DSC) | Civilian | Ni'Var | President of Ni'Var | Vulcan | |
| Deanna Troi | Marina Sirtis | Seasons 1–7 (TNG) Movies (GEN, FCT, INS, NEM) Seasons 6–7 (VOY) Season 4 (ENT) Seasons 1,3 (PIC) Season 1 (LOW) | Commander (TNG S7, VOY, movies) Lt. Commander (TNG S1-7) | USS Titan (NEM) USS Enterprise-E (FCT, INS, NEM) USS Enterprise-D (TNG S1-7, GEN) | Diplomatic officer (NEM) Counselor (TNG S1-7, movies) | Betazoid/Human | |
| Lwaxana Troi | Majel Barrett | Seasons 1–5,7 (TNG) Seasons 1,3–4 (DS9) | Ambassador | Betazed resident | Federation Ambassador | Betazoid | |
| Kestra Troi-Riker | Lulu Wilson | Season 1 (PIC S1) Nepenthe | Civilian | Nepenthe resident | Student | Human/Betazoid | |
| Trip Tucker | Connor Trinneer | Seasons 1–4 (ENT) | Commander | Enterprise NX-01 | Chief Engineer | Human | |
| Tuvok | Tim Russ | Seasons 1–7 (VOY) Season 3 (LD) (Grounded) Season 3 (PIC) | Captain (PIC S3) Commander (LD S3) Lt. Commander (S4-7) Lieutenant (S1-4) | Starfleet Command (PIC S3) USS Voyager (VOY S1-7) | Chief of Security | Vulcan | |
| Ash Tyler/ | Shazad Latif | Seasons 1–2 (DSC) | Lieutenant (S1) | USS Discovery | Chief security officer (S1) | Human/Klingon | |
| T'Veen | Stephanie Czajkowski | Season 3 (PIC) | Lieutenant | USS Titan (NCC-80102-A) (PIC S3) | Science officer | Vulcan/Deltan | |
| José Tyler | Peter Duryea | "The Cage" | Lieutenant | USS Enterprise | Helmsman | Human | |
| Nyota Uhura | Nichelle Nichols | Seasons 1–3 (TOS) Seasons 1–2 (TAS) Movies (TMP, WOK, SFS, TVH, TFF, TUC) Season 5 (DS9) | Commander (WOK, SFS, TVH, TFF, TUC) Lt. Commander (TMP) Lieutenant (TOS, TAS, ST09, STID, STB) | USS Enterprise-A (TVH, TFF, TUC) USS Enterprise (TOS, TAS, TMP, WOK, SFS, ST09, STID, STB) | Communications officer | Human | |
| Zoe Saldana | ST09, STID, STB | ||||||
| Celia Rose Gooding | SNW Seasons 1-2 | ||||||
| Charles Vance | Oded Fehr | Seasons 3-5 (DSC) | Fleet Admiral (PIC S3-5) | Starfleet Command | Commander-in-chief of Starfleet (DSC S3-5) | Human | |
| Vash | Jennifer Hetrick | Seasons 3–4 (TNG) Season 1 (DS9) | Civilian | Earth resident | Archeologist | Human | |
| Vorik | Alexander Enberg | Seasons 3–5, 7 (VOY) | Ensign | USS Voyager | Engineering officer | Vulcan | |
| Weyoun | Jeffrey Combs | Seasons 4–7 (DS9) | None | Cardassia Prime | Dominion Leader | Vorta | |
| Naomi Wildman | Scarlett Pomers | Seasons 2–7 (VOY) | Civilian | USS Voyager resident | Captain's Assistant (unofficial) | Ktarian/Human | |
| Samantha Wildman | Nancy Hower | Seasons 2–6 (VOY) | Ensign | USS Voyager | Science officer | Human | |
| Winn Adami | Louise Fletcher | Seasons 1–3, 5–7 (DS9) | Kai (S3-7) Vedek (S1-2) | Bajor resident | Bajoran religious leader | Bajoran | |
| Worf | Michael Dorn | Seasons 1–7 (TNG) Movies (GEN, FCT, INS, NEM) Seasons 4–7 (DS9) Season 3 (PIC) | Lt. Commander (DS9, movies) Ambassador (DS9 S7) Lieutenant (TNG S3-7) Lieutenant, JG (TNG S1-2) | Starfleet Intelligence (PIC S3) USS Enterprise-E (NEM) Qo'noS (DS9 S7) Deep Space 9 (DS9 S4-7) USS Enterprise-D (S1-7, GEN) | Intelligence operative (PIC S3) Strategic operations officer (DS9 S4-7, movies) Ambassador (DS9 S7) Chief security officer (TNG S2-7) Helmsman (TNG S1) | Klingon | |
| Tasha Yar | Denise Crosby | Seasons 1,3,7 (TNG) | Lieutenant | Chief security officer | Human | ||
| Kasidy Yates | Penny Johnson Jerald | Seasons 3–7 (DS9) | Captain | SS Xhosa Deep Space 9 resident | Freighter Captain | Human | |
| Zek | Wallace Shawn | Seasons 1–3,5–7 (DS9) | Grand Nagus | Ferenginar resident | Leader of Ferengi economics | Ferengi | |
| Zero | Angus Imrie | Season 1 (PRO) | Civilian | USS Protostar NX-76884 | Science officer | Medusan | |
| Zhaban | Jamie McShane | Season 1 (PIC) | Civilian | Earth resident | Butler | Romulan |
See main article: List of Star Trek: The Original Series cast members.
See main article: List of Star Trek: The Next Generation cast members.
See main article: List of Star Trek: Deep Space Nine cast members.
See main article: List of Star Trek: Voyager cast members.
See main article: List of Star Trek: Enterprise cast members.
See main article: List of Star Trek: Discovery characters.
See main article: List of Star Trek: Picard characters.
See main article: List of Star Trek: Lower Decks characters.
See main article: Star Trek: Prodigy.
= Main cast (Credited main cast member)
= Recurring cast (3+ appearances in a season)
| Actor | Character | Seasons | |
|---|---|---|---|
| Main Cast | |||
| Brett Gray | Dal | ||
| Ella Purnell | Gwyndala | ||
| Jason Mantzoukas | Jankom Pog | ||
| Angus Imrie | Zero | ||
| Rylee Alazraqui | Rok-Tahk | ||
| Dee Bradley Baker | Murf | ||
| Jimmi Simpson | Drednok | ||
| John Noble | The Diviner | ||
| Kate Mulgrew | Kathryn Janeway | ||
| Recurring Cast | |||
| Bonnie Gordon | The Ship's Computer | ||
| Robert Beltran | Chakotay | ||
| Jameela Jamil | Asencia | ||
| Daveed Diggs | Tysess | ||
| Jason Alexander | Noum | ||
| Billy Campbell | Thadiun Okona | ||
| Ronny Cox | Edward Jellico | ||
See main article: List of Star Trek: Strange New Worlds characters.
Star Trek has an ongoing tradition of actors returning to reprise their roles in other spin-off series. In some instances, actors have portrayed potential ancestors, descendants, or relatives of characters they originated. Characters have also been recast for later appearances.
Click show below to view an incomplete list:
| List of Star Trek characters with recurring roles | |||||||||||||||
| Actor(s) | Character | The Original Series | The Animated Series | The Next Generation | Deep Space Nine | Voyager | Enterprise | Discovery | Short Treks | Picard | Lower Decks | Prodigy | Strange New Worlds | Very Short Treks | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| William Shatner | James T. Kirk | colspan="5" | |||||||||||||
| Paul Wesley | |||||||||||||||
| Jeffrey Hunter | Christopher Pike | colspan="6" | |||||||||||||
| Sean Kenney | colspan="12" | ||||||||||||||
| Anson Mount | |||||||||||||||
| Leonard Nimoy | Spock | colspan="2" | |||||||||||||
| Ethan Peck | |||||||||||||||
| DeForest Kelley | Leonard McCoy | colspan="5" | |||||||||||||
| James Doohan | Scotty | colspan="2" | |||||||||||||
| Carlos Alazraqui | |||||||||||||||
| Nichelle Nichols | Uhura | colspan="2" | |||||||||||||
| Celia Rose Gooding | |||||||||||||||
| George Takei | Hikaru Sulu | ||||||||||||||
| Walter Koenig | Pavel Chekov | colspan="4" | |||||||||||||
| Jess Bush | Christine Chapel | ||||||||||||||
| Majel Barrett | colspan="11" | ||||||||||||||
| Computer Voice | colspan="4" | ||||||||||||||
| Lwaxana Troi | colspan="9" | ||||||||||||||
| Una "Number One" Chin-Riley | colspan="6" | ||||||||||||||
| Rebecca Romijn | |||||||||||||||
| Grace Lee Whitney | Janice Rand | colspan=8 | |||||||||||||
| Roger C. Carmel | Harry Mudd | colspan="11" | |||||||||||||
| Rainn Wilson | colspan="5" | ||||||||||||||
| Patrick Stewart | Jean-Luc Picard | colspan="4" | |||||||||||||
| Jonathan Frakes | William Riker | ||||||||||||||
| LeVar Burton | Geordi La Forge | colspan="4" | |||||||||||||
| Denise Crosby | Tasha Yar | colspan="10" | |||||||||||||
| Sela | colspan="10" | ||||||||||||||
| Michael Dorn | Worf | colspan="4" | |||||||||||||
| Gates McFadden | Beverly Crusher | ||||||||||||||
| Marina Sirtis | Deanna Troi | colspan="3" | |||||||||||||
| Brent Spiner | Data | colspan="4" | |||||||||||||
| Arik Soong | colspan="7" | ||||||||||||||
| Altan Inigo Soong | colspan="4" | ||||||||||||||
| Adam Soong | colspan="4" | ||||||||||||||
| Wil Wheaton | Wesley Crusher | colspan="2" | |||||||||||||
| Diana Muldaur | Katherine Pulaski | colspan="10" | |||||||||||||
| Ann Mulhall | colspan="12" | ||||||||||||||
| Miranda Jones | colspan="12" | ||||||||||||||
| John de Lancie | Q | colspan="3" | |||||||||||||
| Whoopi Goldberg | Guinan | colspan="4" | |||||||||||||
| Ito Aghayere | colspan="4" | ||||||||||||||
| Dwight Schultz | Reginald Barclay | colspan="8" | |||||||||||||
| Jon Paul Steuer | Alexander Rozhenko | colspan="10" | |||||||||||||
| Brian Bonsall | colspan="10" | ||||||||||||||
| James Sloyan | colspan="10" | ||||||||||||||
| Marc Worden | colspan="9" | ||||||||||||||
| Jonathan Del Arco | Hugh | colspan="4" | |||||||||||||
| Michelle Forbes | Dara | colspan="10" | |||||||||||||
| Ro Laren | colspan="4" | ||||||||||||||
| Alice Krige | Borg Queen | colspan="3" | |||||||||||||
| Susanna Thompson | colspan="8" | ||||||||||||||
| Annie Wersching | colspan="4" | ||||||||||||||
| Avery Brooks | Benjamin Sisko | colspan="9" | |||||||||||||
| René Auberjonois | Odo | colspan="2" | |||||||||||||
| Terry Farrell | Jadzia Dax | colspan="9" | |||||||||||||
| Nicole de Boer | Ezri Dax | colspan="9" | |||||||||||||
| Cirroc Lofton | Jake Sisko | colspan="9" | |||||||||||||
| Colm Meaney | Miles O'Brien | colspan="9" | |||||||||||||
| Armin Shimerman | Quark | ||||||||||||||
| Alexander Siddig | Julian Bashir | colspan="9" | |||||||||||||
| Nana Visitor | Kira Nerys | colspan="3" | |||||||||||||
| Kate Mulgrew | Kathryn Janeway | colspan="2" | |||||||||||||
| Robert Beltran | Chakotay | colspan="2" | |||||||||||||
| Roxann Dawson | B'Elanna Torres | colspan="8" | |||||||||||||
| Jennifer Lien | Kes | colspan="8" | |||||||||||||
| Robert Duncan McNeill | Tom Paris | colspan="3" | |||||||||||||
| Ethan Phillips | Neelix | ||||||||||||||
| Robert Picardo | The Doctor | colspan="2" | |||||||||||||
| Tim Russ | Tuvok | colspan="4" | |||||||||||||
| Jeri Ryan | Seven of Nine | colspan="4" | |||||||||||||
| Garrett Wang | Harry Kim | colspan="8" | |||||||||||||
| Manu Intiraymi | Icheb | colspan="8" | |||||||||||||
| Mark Bennington | colspan="8" | ||||||||||||||
| Casey King | colspan="4" | ||||||||||||||
| Scott Bakula | Jonathan Archer | colspan="7" | |||||||||||||
| Jolene Blalock | T'Pol | colspan="7" | |||||||||||||
| John Billingsley | Phlox | colspan="7" | |||||||||||||
| Dominic Keating | Malcolm Reed | colspan="7" | |||||||||||||
| Anthony Montgomery | Travis Mayweather | colspan="7" | |||||||||||||
| Linda Park | Hoshi Sato | colspan="7" | |||||||||||||
| Connor Trinneer | Trip Tucker | ||||||||||||||
| Sonequa Martin-Green | Michael Burnham | colspan="6" | |||||||||||||
| Kyrie Mcalpin | colspan="5" | ||||||||||||||
| Doug Jones | Saru | ||||||||||||||
| Shazad Latif | Ash Tyler / Voq | colspan="6" | |||||||||||||
| Anthony Rapp | Paul Stamets | colspan="6" | |||||||||||||
| Mary Wiseman | Sylvia Tilly | colspan="5" | |||||||||||||
| Jason Isaacs | Gabriel Lorca | colspan="6" | |||||||||||||
| Wilson Cruz | Hugh Culber | colspan="6" | |||||||||||||
| Mark Lenard | Sarek | colspan="10" | |||||||||||||
| James Frain | colspan="6" | ||||||||||||||
| Jane Wyatt | Amanda Grayson | colspan="12" | |||||||||||||
| Majel Barrett | colspan="11" | ||||||||||||||
| Mia Kirshner | |||||||||||||||
| Alison Pill | Agnes Jurati | colspan="4" | |||||||||||||
| Isa Briones | Dahj Asha / Soji Asha / Sutra / Kore Soong | colspan="4" | |||||||||||||
| Harry Treadaway | Narek | colspan="4" | |||||||||||||
| Michelle Hurd | Raffi Musiker | colspan="4" | |||||||||||||
| Santiago Cabrera | Chris Rios | colspan="4" | |||||||||||||
| Evan Evagora | Elnor | colspan="4" | |||||||||||||
| Orla Brady | Laris | colspan="4" | |||||||||||||
| Tallinn | colspan="4" | ||||||||||||||
| Ed Speleers | Jack Crusher | colspan="4" | |||||||||||||
| Tawny Newsome | Beckett Mariner | colspan="1" | |||||||||||||
| Brad Boimler | colspan="1" | ||||||||||||||
| Noël Wells | D'Vana Tendi | colspan="2" | |||||||||||||
| Eugene Cordero | Sam Rutherford | colspan="1" | |||||||||||||
| Dawnn Lewis | Carol Freeman | colspan="3" | |||||||||||||
| Jerry O'Connell | Jack Ransom | colspan="1" | |||||||||||||
| Fred Tatasciore | Shaxs | colspan="3" | |||||||||||||
| Gillian Vigman | T'Ana | colspan="3" | |||||||||||||
| Brett Gray | Dal | colspan="2" | |||||||||||||
| Ella Purnell | Gwyndala | colspan="2" | |||||||||||||
| Jason Mantzoukas | Jankom Pog | colspan="2" | |||||||||||||
| Angus Imrie | Zero | ||||||||||||||
| Rylee Alazraqui | Rok-Tahk | colspan="2" | |||||||||||||
| Dee Bradley Baker | Murf | colspan="2" | |||||||||||||
| Jimmi Simpson | Drednok | colspan="2" | |||||||||||||
| John Noble | The Diviner/Ilthuran | colspan="2" | |||||||||||||
| Jameela Jamil | Asencia | colspan="2" | |||||||||||||
| Booker Bradshaw | Joseph M'Benga | colspan="12" | |||||||||||||
| Babs Olusanmokun | |||||||||||||||
| Christina Chong | La'an Noonien-Singh | ||||||||||||||
| Melissa Navia | Erica Ortegas | ||||||||||||||
| Bruce Horak | Hemmer | ||||||||||||||
| Arlene Martel | T'Pring | colspan="12" | |||||||||||||
| Gia Sandhu | |||||||||||||||