Medal summary
* Host nation (Laos)
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 |  Thailand | 6 | 2 | 1 | 9 |
| 2 |  Laos* | 5 | 3 | 1 | 9 |
| 3 |  Vietnam | 1 | 5 | 3 | 9 |
| 4 |  Philippines | 1 | 3 | 5 | 9 |
| 5 |  Myanmar | 0 | 0 | 5 | 5 |
| Totals (5 entries) | 13 | 13 | 15 | 41 | |
Muay Lao at the 2009 SEA Games was held at Beung Kha Ngong Sport Centre from 10 to 15 December 2009 in Vientiane, Laos.
* Host nation (Laos)
| Rank | Nation | Gold | Silver | Bronze | Total |
|---|---|---|---|---|---|
| 1 | Thailand | 6 | 2 | 1 | 9 |
| 2 | Laos* | 5 | 3 | 1 | 9 |
| 3 | Vietnam | 1 | 5 | 3 | 9 |
| 4 | Philippines | 1 | 3 | 5 | 9 |
| 5 | Myanmar | 0 | 0 | 5 | 5 |
| Totals (5 entries) | 13 | 13 | 15 | 41 | |
| Event | Gold | Silver | Bronze |
|---|---|---|---|
| Pinweight 45 kg | Thongngam Nattakorn Thailand | Bouavanh Chanthaly Laos | Lê Đức Cường Vietnam |
| Light flyweight 48 kg | Soukan Taipanyavong Laos | Roland Claro Philippines | Aye Ko Ko Myanmar |
| Flyweight 51 kg | Thongbang Seuaphom Laos | Romnick Pabalate Philippines | Nane Htaw Taw Myanmar |
| Bantamweight 54 kg | Noukhit Ladsaphao Laos | Anuchit Sathit Thailand | Soe Maung Muang Myanmar |
| Featherweight 57 kg | Teerawat Wannalee Thailand | Nguyễn Trần Duy Nhất Vietnam | Than Oo Myanmar |
| Lightweight 60 kg | Zaidi Laruan Philippines | Vixay Bounthavy Laos | Win Tun Myanmar |
| Ly Hoang Tan Vietnam | |||
| Light welterweight 63.5 kg | Weerapon Kwangkhwang Thailand | Jonathan Polosan Philippines | Võ Văn Đài Vietnam |
| Welterweight 67 kg | Sakdithat Sakdarat Thailand | Bùi Huỳnh Giang Vietnam | Harold Gregorio Philippines |
| Event | Gold | Silver | Bronze |
|---|---|---|---|
| Pinweight 45 kg | Molthira Vatanapackdee Thailand | Bounchanh Sengpaserth Laos | May Libao Philippines |
| Light flyweight 48 kg | Phouthasone Keosayavong Laos | Nguyễn Thị Tuyết Dung Vietnam | Maricel Subang Philippines |
| Flyweight 51 kg | Nguyễn Thị Tuyết Mai Vietnam | Konnika Nuanboriboon Thailand | Angkor Mingxo Laos |
| Preciosa Ocaya Philippines | |||
| Bantamweight 54 kg | Wanlaya Pongta Thailand | Phan Thị Ngọc Linh Vietnam | Ana Marie Rey Philippines |
| Featherweight 57 kg | Paylor Xaypao Laos | Trần Thị Hương Vietnam | Dueannapa Khongfueang Thailand |