Medal table
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 |  United States (USA) | 2 | 1 | 0 | 3 |
| 2 |  Canada (CAN) | 1 | 1 | 1 | 3 |
| 3 |  Japan (JPN) | 0 | 1 | 2 | 3 |
| Totals (3 entries) | 3 | 3 | 3 | 9 | |
| 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 |
These are the results from the synchronised swimming competition at the 1991 World Aquatics Championships.
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 | United States (USA) | 2 | 1 | 0 | 3 |
| 2 | Canada (CAN) | 1 | 1 | 1 | 3 |
| 3 | Japan (JPN) | 0 | 1 | 2 | 3 |
| Totals (3 entries) | 3 | 3 | 3 | 9 | |
| Event | Gold | Silver | Bronze |
| Solo routine | Sylvie Fréchette (CAN) 201.013 | Kristen Babb-Sprague (USA) 196.314 | Mikako Kotani (JPN) 195.110 |
| Duet routine | Karen Josephson (USA) Sarah Josephson (USA) 199.762 | Mikako Kotani (JPN) Aki Takayama (JPN) 194.307 | Lisa Alexander (CAN) Kathy Glen (CAN) 192.649 |
| Team routine | United States Kristen Babb-Sprague Becky Dyroen Karen Josephson Sarah Josephson Jill Savery Nathalie Schneyder Heather Simmons Michelle Svitenko 196.144 | Canada Lisa Alexander Karen Clark Charlene Davies Karen Fonteyne Kathy Glen Heather Johnston Christine Larsen Cari Read 193.259 | Japan Hisako Aoishi Mina Enkaku Kiyoko Ishibashi Ikuko Kato Fumiko Okuno Aki Takayama Yumi Wakabayashi Chiaki Yamamura 189.753 |
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