| Event: | Swimming |
| Competition: | 1983 Mediterranean Games |
| Location: | Casablanca, Morocco |
| Previous: | 1979 |
| Next: | 1987 |
The swimming competition at the 1983 Mediterranean Games was held in Casablanca, Morocco.
| 100 m freestyle | 51.71 | 52.48 | 53.48 | ||||
| 200 m freestyle | 1:52.98 | 1:53.06 | 1:53.26 | ||||
| 400 m freestyle | 3:54.72 | 3:56.92 | 3:57.66 | ||||
| 1500 m freestyle | 15:18.89 | 15:28.75 | 15:34.16 | ||||
| 100 m backstroke | 58.88 | 58.95 | 59.77 | ||||
| 200 m backstroke | 2:06.06 | 2:08.34 | 2:09.70 | ||||
| 100 m breaststroke | 1:05.44 | 1:05.47 | 1:05.52 | ||||
| 200 m breaststroke | 2:22.07 | 2:24.71 | 2:24.94 | ||||
| 100 m buterfly | 55.21 | 56.50 | 56.71 | ||||
| 200 m buterfly | 2:03.09 | 2:03.22 | 2:03.41 | ||||
| 200 m medley | 2:06.67 | 2:07.30 | 2:08.01 | ||||
| 400 m medley | 4:27.30 | 4:28.14 | 4:28.31 | ||||
| 4 × 100 m freestyle relay | 3:26.53 | 3:28.80 | 3:30.76 | ||||
| 4 × 200 m freestyle relay | 7:34.48 | 7:35.46 | 7:36.96 | ||||
| 4 × 100 m medley relay | 3:50.44 | 3:52.76 | 3:53.81 |
| 100 m freestyle | 58.00 | 58.53 | 58.63 | ||||
| 200 m freestyle | 2:04.86 | 2:05.07 | 2:05.63 | ||||
| 400 m freestyle | 4:18.61 | 4:19.61 | 4:21.49 | ||||
| 800 m freestyle | 8:47.94 | 8:50.71 | 8:53.83 | ||||
| 100 m backstroke | 1:04.96 | 1:05.43 | 1:07.05 | ||||
| 200 m backstroke | 2:19.20 | 2:20.29 | 2:21.50 | ||||
| 100 m breaststroke | 1:12.35 | 1:12.99 | 1:13.68 | ||||
| 200 m breaststroke | 2:38.21 | 2:38.50 | 2:40.03 | ||||
| 100 m buterfly | 1:02.79 | 1:03.60 | 1:04.16 | ||||
| 200 m buterfly | 2:17.97 | 2:19.50 | 2:21.18 | ||||
| 200 m medley | 2:18.80 | 2:20.54 | 2:22.97 | ||||
| 400 m medley | 4:54.72 | 4:55.96 | 4:56.86 | ||||
| 4 × 100 m freestyle relay | 3:53.64 | 4:02.28 | 4:09.92 | ||||
| 4 × 100 m medley relay | 4:17.99 | 4:19.79 | 4:29.69 |