The swimming competition at the 1965 Summer Universiade took place in Budapest, Hungary.[1]
| 100 m freestyle | 54.4 | 54.8 | 55.0 | ||||
| 400 m freestyle | 4:15.6 | 4:22.5 | 4:23.7 | ||||
| 1500 m freestyle | 17:09.9 | 17:17.8 | 17:25.1 | ||||
| 200 m backstroke | 2:13.7 | 2:13.9 | |||||
| 200 m breaststroke | 2:33.7 | 2:34.7 | 2:35.0 | ||||
| 200 m butterfly | 2:09.3 | 2:10.1 | 2:10.4 | ||||
| 400 m individual medley | 4:53.0 | 4:55.3 | 4:58.3 | ||||
| 4×100 m freestyle relay | Gary Dilley Gary Ilman Donald Roth Roy Saari | 3:38.4 | 3:41.4 | 3:42.2 | |||
| 4×200 m freestyle relay | 8:10.9 | 8:14.4 | 8:19.1 | ||||
| 4×100 m medley relay | 4:03.9 | 4:03.9 | 4:06.4 |
| 100 m freestyle | 1:03.7 | 1:04.0 | 1:04.3 | ||||
| 400 m freestyle | 5:08.9 | 5:11.5 | 5:13.8 | ||||
| 100 m backstroke | 1:11.4 | 1:11.5 | 1:11.8 | ||||
| 200 m breaststroke | 2:52.4 | 2:56.4 | 2:57.3 | ||||
| 100 m butterfly | 1:11.6 | 1:11.9 | 1:12.2 | ||||
| 4×100 m freestyle relay | 4:21.8 | 4:27.9 | 4:31.1 | ||||
| 4×100 m medley relay | 4:49.6 | 4:52.4 | 5:04.1 |