| Event: | Muay Thai |
| Games: | 2005 Southeast Asian Games |
| Venue: | GSIS Bldg. |
| Location: | Pasay, Metro Manila |
| Date: | December 1–4 |
| Next: | 2007 |
Muay Thai at the 2005 Southeast Asian Games took place in the Government Service Insurance System Assembly Hall in Pasay, Metro Manila, Philippines.
The event was held from December 1–4.
| Men's 57−60 kg | Opas Sualek Taweesak Mennoi | nowrap | Rogelio Garganera Davis Panisigan | nowrap | Langsanh Masopha Khammouane Khonovanh |
| Women's 51−54 kg | nowrap | Claire Cadampong Lianne Flameno | not awarded | not awarded | |
| Women's 54−57 kg | Victoria Agbayani Cristina Custodio | not awarded | not awarded |
| Light flyweight 45−48 kg | ||||
| Flyweight 48−51 kg | nowrap | |||
| Bantamweight 51−54 kg | ||||
| Featherweight 54−57 kg | ||||