The swimming competition at the 1999 South Asian Games in Kathmandu, Nepal.
| 50 m freestyle | 24.53 | 24.96 | 25.24 | ||||
| 100 m freestyle | 54.60 | 55.02 | 55.49 | ||||
| 200 m freestyle | 1:59.08 | ||||||
| 400 m freestyle | 4:20.29 | 4:35.27 | 4:36.54 | ||||
| 1500 m freestyle | 17:06.57 | 18:09.69 | |||||
| 100 m backstroke | 1:02.40 | 1:04.67 | |||||
| 200 m backstroke | 2:19.55 | 2:25.13 | 2:25.30 | ||||
| 100 m breaststroke |  Deepak Singh | 1:09.03 | |||||
| 200 m breaststroke | |||||||
| 100 m butterfly | 59.02 | 59.28 | 59.46 | ||||
| 200 m butterfly | 2:10.87 | 2:14.92 | 2:17.32 | ||||
| 200 m individual medley | 2:18.40 | 2:20.06 | 2:20.87 | ||||
| 400 m individual medley | |||||||
| 4×100 m freestyle relay | 3:39.73 | ||||||
| 4×200 m freestyle relay | 8:30.52 | 8:46.66 | 10:08.38 | ||||
| 4×100 m medley relay | 4:04.47 | 4:12.55 | 4:15.42 | ||||
| 50 m freestyle | 28.71 | ||||||
| 100 m freestyle | 1:00.40 | ||||||
| 200 m freestyle | 2:12.37 | 2:14.87 | 2:25.61 | ||||
| 400 m freestyle | 4:38.29 | 4:38.30 | 5:12.72 | ||||
| 800 m freestyle | |||||||
| 100 m backstroke | 1:12.12 | 1:13.03 | 1:16.61 | ||||
| 200 m backstroke | 2:31.96 | 2:51.06 | 2:57.41 | ||||
| 100 m breaststroke | 1:19.09 | 1:21.23 | 1:26.58 | ||||
| 200 m breaststroke | 2:50.95 | ||||||
| 100 m butterfly | 1:07.66 | 1:09.94 | 1:19.53 | ||||
| 200 m butterfly | 2:34.94 | 3:03.09 | 3:17.57 | ||||
| 200 m individual medley | 2:34.39 | ||||||
| 400 m individual medley | |||||||
| 4×100 m freestyle relay | 4:16:36 | ||||||
| 4×100 m freestyle relay | 9:21.36 | ||||||
| 4×100 m medley relay | |||||||