Muay Lao at the 2009 SEA Games was held at Beung Kha Ngong Sport Centre from 10 to 15 December 2009 in Vientiane, Laos.
| Pinweight 45 kg | ||||
| Light flyweight 48 kg | ||||
| Flyweight 51 kg | ||||
| Bantamweight 54 kg | ||||
| Featherweight 57 kg | ||||
| Lightweight 60 kg | ||||
| Light welterweight 63.5 kg | ||||
| Welterweight 67 kg |
| Pinweight 45 kg | ||||
| Light flyweight 48 kg | ||||
| Flyweight 51 kg | ||||
| Bantamweight 54 kg | ||||
| Featherweight 57 kg |