| Event: | Swimming |
| Games: | 1966 Asian Games |
| Venue: | Visutdrarom Swimming Pool |
| Dates: | 13–17 December 1966 |
| Prev: | 1962 |
| Next: | 1970 |
Swimming was contested at the 1966 Asian Games in Visutdrarom Swimming Pool, Bangkok, Thailand from December 13 to December 17, 1966.
| 100 m freestyle | 56.1 | 56.8 | 57.1 | ||||
| 200 m freestyle | 2:00.7 | 2:04.8 | 2:05.3 | ||||
| 400 m freestyle | 4:28.0 | 4:29.9 | 4:30.0 | ||||
| 1500 m freestyle | 17:36.0 | 17:56.6 | 18:16.4 | ||||
| 100 m backstroke | 1:03.2 | 1:03.8 | 1:07.1 | ||||
| 200 m backstroke | 2:18.0 | 2:24.8 | 2:27.1 | ||||
| 100 m breaststroke | 1:10.0 | 1:10.1 | 1:12.4 | ||||
| 200 m breaststroke | 2:35.0 | 2:35.4 | 2:39.7 | ||||
| 100 m butterfly | 1:00.1 | 1:00.4 | 1:00.7 | ||||
| 200 m butterfly | 2:12.7 | 2:14.5 | 2:17.1 | ||||
| 400 m individual medley | 5:04.9 | 5:09.5 | 5:13.9 | ||||
| 4 × 200 m freestyle relay | 8:27.7 | 8:46.2 | 9:03.4 | ||||
| 4 × 100 m medley relay | 4:11.1 | 4:18.4 | 4:20.6 |
| 100 m freestyle | 1:03.2 | 1:04.2 | 1:05.5 | ||||
| 200 m freestyle | 2:18.6 | 2:18.9 | 2:19.4 | ||||
| 400 m freestyle | 4:53.0 | 4:55.8 | 5:00.9 | ||||
| 100 m backstroke | 1:09.5 | 1:11.4 | 1:15.2 | ||||
| 100 m breaststroke | 1:22.9 | 1:23.6 | 1:25.3 | ||||
| 200 m breaststroke | 2:58.7 | 2:58.8 | 3:03.8 | ||||
| 100 m butterfly | 1:08.5 | 1:08.6 | 1:13.4 | ||||
| 200 m individual medley | 2:38.5 | 2:28.8 | 2:42.2 | ||||
| 4 × 100 m freestyle relay | 4:22.6 | Helen Elliott Tessie Lozada Gertrudes Lozada Corazon Lozada | 4:37.4 | 4:50.6 | |||
| 4 × 100 m medley relay | 4:51.9 | 5:07.7 | 5:18.3 |