| 6th FINA World Championships | |
| Hostcity: | Perth, Western Australia |
| Dates: | 3–13 January 1991 |
| Previous: | 1986 Madrid |
| Next: | 1994 Rome |
The 1991 World Aquatics Championships took place at the Claremont Superdrome in Perth, Western Australia from 3 to 13 January 1991 with 1142 participating athletes.
| width=50 | Place | width=200 | Nation | width=50 | width=50 | width=50 | width=50 | Total | |||
|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 17 | 11 | 6 | 34 | |||||||
| 2 | 8 | 3 | 2 | 13 | |||||||
| 3 | 5 | 2 | 2 | 9 | |||||||
| 4 | 4 | 9 | 9 | 22 | |||||||
| 5 | 3 | 5 | 2 | 10 | |||||||
| 6 | 2 | 1 | 1 | 4 | |||||||
| 7 | 1 | 3 | 6 | 10 | |||||||
| 8 | 1 | 3 | 1 | 5 | |||||||
| 9 | 1 | 2 | 4 | 7 | |||||||
| 10 | 1 | 1 | 1 | 3 | |||||||
| 11 | 1 | 0 | 0 | 1 | |||||||
| 1 | 0 | 0 | 1 | ||||||||
| 13 | 0 | 2 | 3 | 5 | |||||||
| 14 | 0 | 2 | 1 | 3 | |||||||
| 15 | 0 | 1 | 1 | 2 | |||||||
| 16 | 0 | 1 | 0 | 1 | |||||||
| 17 | 0 | 0 | 2 | 2 | |||||||
| 0 | 0 | 2 | 2 | ||||||||
| 19 | 0 | 0 | 1 | 1 | |||||||
| Total | 45 | 46 | 44 | 135 | |||||||
See main article: Diving at the 1991 World Aquatics Championships.
| 1 m springboard | ||||
| 3 m springboard | ||||
| 10 m platform |
| 1 m springboard | ||||
| 3 m springboard | ||||
| 10 m platform |
See main article: Open water swimming at the 1991 World Aquatics Championships.
| 25 km |
| 25 km |
See main article: Swimming at the 1991 World Aquatics Championships.
| 50 m freestyle | ||||
| 100 m freestyle | ||||
| 200 m freestyle | ||||
| 400 m freestyle | ||||
| 1500 m freestyle | ||||
| 100 m backstroke | ||||
| 200 m backstroke | ||||
| 100 m breaststroke | ||||
| 200 m breaststroke | ||||
| 100 m butterfly | ||||
| 200 m butterfly | ||||
| 200 m individual medley | ||||
| 400 m individual medley | ||||
| 4 × 100 m freestyle relay | Tom Jager Brent Lang Doug Gjertsen Matt Biondi | Peter Sitt Dirk Richter Steffen Zesner Bengt Zikarsky | Gennadiy Prigoda Yuriy Bashkatov Veniamin Tayanovich Volodymyr Tkachenko | |
| 4 × 200 m freestyle relay | Peter Sitt Steffen Zesner Stefan Pfeiffer Michael Groß | Troy Dalbey Melvin Stewart Dan Jorgensen Doug Gjertsen | Emanuele Idini Roberto Gleria Stefano Battistelli Giorgio Lamberti | |
| 4 × 100 m medley relay | Jeff Rouse Eric Wunderlich Mark Henderson Matt Biondi | Vladimir Shemetov Dmitriy Volkov Vladislav Kulikov Veniamin Tayanovich | Frank Hoffmeister Christian Poswiat Michael Groß Dirk Richter |
| 50 m freestyle | — | |||
| 100 m freestyle | ||||
| 200 m freestyle | ||||
| 400 m freestyle | ||||
| 800 m freestyle | ||||
| 100 m backstroke | ||||
| 200 m backstroke | ||||
| 100 m breaststroke | ||||
| 200 m breaststroke | ||||
| 100 m butterfly | ||||
| 200 m butterfly | ||||
| 200 m individual medley | ||||
| 400 m individual medley | ||||
| 4 × 100 m freestyle relay | Nicole Haislett Julie Cooper Whitney Hedgepeth Jenny Thompson | Simone Osygus Kerstin Kielgaß Karen Seick Manuela Stellmach | Mildred Muis Inge de Bruijn Marianne Muis Karin Brienesse | |
| 4 × 200 m freestyle relay | Kerstin Kielgaß Manuela Stellmach Dagmar Hase Stephanie Ortwig | Marianne Muis Manon Masseurs Mildred Muis Karin Brienesse | Gitta Jensen Berit Puggaard Annette Povlsen Mette Jacobsen | |
| 4 × 100 m medley relay | Janie Wagstaff Tracey McFarlane Crissy Ahmann-Leighton Nicole Haislett | Nicole Livingstone Linley Frame Susie O'Neill Karen van Wirdum | Svenja Schlicht Jana Dörries Susanne Müller Manuela Stellmach |
See main article: Synchronised swimming at the 1991 World Aquatics Championships.
| Solo routine | ||||
| Duet routine | ||||
| Team routine |
See main article: Water polo at the 1991 World Aquatics Championships – Men's tournament.
| Team |
See main article: Water polo at the 1991 World Aquatics Championships – Women's tournament.
| Team |