| Event |
|---|
| 100 m FREE STYLE - BOYS - FINAL |
| Rec | Name | NOC | Year | |
|---|---|---|---|---|
| ASG REC | 0 m 50.97 s | WELSON SIM WEE SHENG | MAS | 2015 |
| Pos | Lane | Name | NOC | Time | Notes |
| 1 | 3 | MIKKEL LEE JUN JIE | SGP | 50.72 s | CR |
| 2 | 4 | RAVIPON SANGAWORAWONG | THA | 52.00 s | |
| 3 | 2 | DANANDRA INDRA DAMARIO | INA | 52.19 s | |
| 4 | 5 | AGUS NUARTA | INA | 52.52 s | |
| 5 | 6 | NATTHAPAT NANTAPANG | THA | 52.89 s | |
| 6 | 8 | NGUYEN MINH HIEN | VIE | 53.62 s | |
| 7 | 1 | ZACHARY ADAM TAN KIAN PHEN | MAS | 54.17 s | |
| 8 | 7 | IQMAL MUQHIS BIN FAIZAL | MAS | 54.26 s |