The swimming competition at the 1975 Mediterranean Games was held in Algiers, Algeria.
| 100 m freestyle | 53.07 | 54.20 | 54.36 | ||||
| 200 m freestyle | 1:57.55 | 2:00.48 | 2:00.53 | ||||
| 400 m freestyle | 4:08.05 | 4:08.82 | 4:09.38 | ||||
| 1500 m freestyle | 16:27.01 | 16:28.55 | 16:30.57 | ||||
| 100 m backstroke | 1:00.20 | 1:01.44 | 1:02.02 | ||||
| 200 m backstroke | 2:08.21 | 2:10.30 | 2:11.75 | ||||
| 100 m breaststroke | 1:06.16 | 1:06.24 | 1:08.76 | ||||
| 200 m breaststroke | 2:27.38 | 2:28.68 | 2:29.65 | ||||
| 100 m butterfly | 58.10 | 58.57 | 59.30 | ||||
| 200 m butterfly | 2:09.36 | 2:09.77 | 2:12.33 | ||||
| 200 m individual medley | 2:12.12 | 2:14.30 | 2:14.33 | ||||
| 400 m individual medley | 4:46.24 | 4:50.99 | 4:51.19 | ||||
| 4x100 m freestyle | 3:36.79 | 3:37.36 | 3:41.42 | ||||
| 4x200 m freestyle | 7:57.24 | 8:03.44 | 8:09.71 | ||||
| 4x100 m medley | 3:59.46 | 4:00.04 | 4:00.28 |
| 100 m freestyle | 1:01.36 | 1:02.25 | 1:02.57 | ||||
| 400 m freestyle | 4:34.45 | 4:37.37 | 4:40.29 | ||||
| 100 m backstroke | 1:08.88 | 1:08.89 | 1:10.83 | ||||
| 100 m breaststroke | 1:17.84 | 1:18.16 | 1:20.22 | ||||
| 100 m butterfly | 1:06.72 | 1:07.02 | 1:07.40 | ||||
| 4x100 m freestyle relay | 4:11.16 | 4:12.80 | 4:15.50 |