Back Campionat del Món de natació de 1991 Catalan Schwimmweltmeisterschaften 1991 German Campeonato Mundial de Natación de 1991 Spanish 1991. aasta ujumise maailmameistrivõistlused Estonian مسابقات قهرمانی ورزشهای آبی جهان ۱۹۹۱ Persian Uinnin maailmanmestaruuskilpailut 1991 Finnish Championnats du monde de natation 1991 French אליפות העולם בשחייה 1991 HE Svjetsko prvenstvo u vodenim športovima 1991. Croatian 1991-es úszó-világbajnokság Hungarian
| 6th FINA World Championships | |
|---|---|
| Host city | Perth, Western Australia |
| Date(s) | 3–13 January 1991 |
| 1991 FINA World Championships | ||
|---|---|---|
| Diving | ||
| Individual | ||
| 1 m | men | women |
| 3 m | men | women |
| 10 m | men | women |
| Open water swimming | ||
| 25 km | men | women |
| Swimming | ||
| Freestyle | ||
| 50 m | men | women |
| 100 m | men | women |
| 200 m | men | women |
| 400 m | men | women |
| 800 m | men | women |
| 1500 m | men | women |
| Backstroke | ||
| 100 m | men | women |
| 200 m | men | women |
| Breaststroke | ||
| 100 m | men | women |
| 200 m | men | women |
| Butterfly | ||
| 100 m | men | women |
| 200 m | men | women |
| Individual medley | ||
| 200 m | men | women |
| 400 m | men | women |
| Freestyle relay | ||
| 4×100 m | men | women |
| 4×200 m | men | women |
| Medley relay | ||
| 4×100 m | men | women |
| Synchronised swimming | ||
| Solo | women | |
| Duet | women | |
| Team | women | |
| Water polo | ||
| Tournament | men | women |
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.