Synchronised swimming at the 1991 World Aquatics Championships
These are the results from the synchronised swimming competition at the 1991 World Aquatics Championships.
Medals table
| 1 |  United States |
2 | 1 | 0 | 3 |
| 2 |  Canada |
1 | 1 | 1 | 3 |
| 3 |  Japan |
0 | 1 | 2 | 3 |
Medal summary
| 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 |
Multiple medal winners
- Mikako Kotani (Japan): won 2 silver medals.