| Event: | Aquatics |
| Games: | 1993 |
| Venue: | Toa Payoh Swimming Complex |
| Dates: | 13-17 June 1993 |
| Prev: | 1991 |
| Next: | 1995 |
Aquatics at the 1993 Southeast Asian Games included swimming, diving and water polo events. The three sports of aquatics were held at Toa Payoh Aquatics Center in Singapore. Aquatics events was held between 13 June to 17 June.
| 50 m freestyle[1] |  Ang Peng Siong | 23.67 |  Richard Sam Bera | 23.73 | Wisnu Wardhana | 24.00 | |
| 100 m freestyle[2] | Wisnu Wardhana | 51.31 GR | Richard Sam Bera | 52.55 |  Padhanaseth Changkasiri | 53.27 | |
| 200 m freestyle[3] | Richard Sam Bera | 1:54.86 GR | Wisnu Wardhana | 1:55.71 | Kenneth Yeo | 1:55.73 | |
| 400 m freestyle[4] |  Jeffrey Ong | 4:00.42 | 4:00.71 | 4:03.06 | |||
| 1500 m freestyle | Jeffrey Ong | 15:56.48 | Pawin Kohvathana | 16:06.99 | Ratapong Sirisanont | 16:28.99 | |
| 100 m backstroke |  Raymond Papa | 58.45 | Leo Najera | 59.53 | 59.95 | ||
| 200 m backstroke[5] | Raymond Papa | 2:03.73 GR | Gerald Koh | 2:09.69 | Felix Sutanto | 2:10.27 | |
| 100 m breaststroke | Wirmandi Sugriat | 1:05.53 GR | Eric Buhain | 1:06.12 | Lee Patrick Concepcion | 1:06.56 | |
| 200 m breaststroke | Ratapong Sirisanont | 2:20.10 GR | Wirmandi Sugriat | 2:22.70 | Desmond Koh Mun Kit | 2:24.01 | |
| 100 m butterfly | Eric Buhain | 56.62 | Wisnu Wardhana | 56.63 | 57.68 | ||
| 200 m butterfly | 2:04.68 | Vidi Lukman Korompis | 2:05.21 | Desmond Koh Mun Kit | 2:07.11 | ||
| 200 m individual medley | Ratapong Sirisanont | 2:06.90 | Desmond Koh Mun Kit | 2:08.98 | Albert Sutanto | 2:10.84 | |
| 400 m individual medley[6] | Ratapong Sirisanont | 4:29.74 GR | Desmond Koh Mun Kit | 4:31.83 | Jeffrey Ong | 4:38.65 | |
| 4 × 100 m freestyle relay | Indonesia | 3:30.66 GR | Thailand | 3:33.94 | Singapore | 3:36.94 | |
| 4 × 200 m freestyle relay | Indonesia | 7:46.65 GR | Thailand | 7:49.56 | Singapore | 7:58.35 | |
| 4 × 100 m medley relay[7] | Indonesia | 3:52.24 GR | Philippines | 3:53.54 | Thailand | 3:55.48 | |
| 50 m freestyle | Joscelin Yeo Wei Ling | 26.93 GR | Thanyaluk Sakulkong | 27.43 | Mary Joy Ong | 27.78 | |
| 100 m freestyle | Joscelin Yeo Wei Ling | 57.58 GR | Meitri Widya Pangestika | 59.42 | Eadeline Lim | 59.78 | |
| 200 m freestyle | Joscelin Yeo Wei Ling | 2:06.03 | Meitri Widya Pangestika | 2:07.52 | Praphalsai Minpraphal | 2:08.60 | |
| 400 m freestyle | Ravee Inporn Udom | 4:25.55 | May Ooi | 4:31.02 | Praphalsai Minpraphal | 4:31.48 | |
| 800 m freestyle | Ravee Inporn Udom | 9:05.15 | Thanya Sridama | 9:12.06 | May Ooi | 9:16.92 | |
| 100 m backstroke | Akiko Thomson | 1:04.86 GR | Praphalsai Minpraphal | 1:05.33 | Chintya Putrianda | 1:06.30 | |
| 200 m backstroke | Akiko Thomson | 2:16.76 GR | Praphalsai Minpraphal | 2:19.20 | Elsa Manora Nasution | 2:22.99 | |
| 100 m breaststroke | Joscelin Yeo Wei Ling | 1:12.04 GR | Sornsawan Phuvichit | 1:13.02 | Rita Mariani | 1:14.11 | |
| 200 m breaststroke | Joscelin Yeo Wei Ling | 2:34.87 GR | Sornsawan Phuvichit | 2:37.21 | Rita Mariani | 2:38.04 | |
| 100 m butterfly | Joscelin Yeo Wei Ling | 1:02.22 GR | May Ooi | 1:02.66 | Elsa Manora Nasution | 1:03.80 | |
| 200 m butterfly | May Ooi | 2:18.45 | Praphalsai Minpraphal | 2:18.98 | 2:20.25 | ||
| 200 m individual medley | Joscelin Yeo Wei Ling | 2:17.48 GR | May Ooi | 2:18.32 | Praphalsai Minpraphal | 2:23.21 | |
| 400 m individual medley | May Ooi | 4:58.24 GR | Joscelin Yeo Wei Ling | 4:58.95 | Elsa Manora Nasution | 5:03.48 | |
| 4 × 100 m freestyle relay | Singapore | 3:56.92 GR | Indonesia | 4:00.94 | Thailand | 4:01.82 | |
| 4 × 100 m medley relay | Singapore | 4:20.30 | Indonesia | 4:22.96 | Thailand | 4:23.17 | |
| Men's 3 m springboard | 575.55 | 558.15 | 557.30 | ||||
| Men's 10 m platform[8] | 510.20 | 493.00 | 490.00 | ||||
| Women's 3 m springboard | 484.45 | 448.55 | 448.30 | ||||
| Women's 10 m platform | 366.05 | 347.80 | 331.15 |
| Men's | Singapore | Philippines |