These are the results from the synchronised swimming competition at the 1978 World Aquatics Championships. Canada was the top achiever in the competition, winning 2 gold medals and 1 bronze.
Medal table
edit| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 |  Canada (CAN) | 2 | 0 | 1 | 3 |
| 2 |  United States (USA) | 1 | 1 | 1 | 3 |
| 3 |  Japan (JPN) | 0 | 2 | 1 | 3 |
| Totals (3 entries) | 3 | 3 | 3 | 9 | |
Medal summary
edit| Event | Gold | Silver | Bronze |
| Solo routine |
Helen Vanderburg (CAN) 187.849 |
 Pam Tryon (USA) 181.499 |
Yasuko Unezaki (JPN) 179.650 |
| Duet routine |
Michelle Calkins (CAN) Helen Vanderburg (CAN) 183.300 |
Masako Fujiwara (JPN) Yasuko Fujiwara (JPN) 181.842 |
Michele Barone (USA) Pam Tryon (USA) 180.758 |
| Team routine |
United States (USA) 182.300 |
Japan (JPN) 181.533 |
Canada (CAN) 177.919 |