| Noc: | VIE |
| Nocname: | Vietnam Olympic Committee |
| Year: | 2005 |
| Games: | Southeast Asian Games |
| Location: | the Manila |
| Competitors: | 516 |
| Flagbearer: | Nguyet Van Hung |
| Gold: | 71 |
| Silver: | 68 |
| Bronze: | 89 |
| Rank: | 3 |
| Appearances: | |
| Website: |
Vietnam competed at the 2005 Southeast Asian Games in the Philippines under the IOC country code VIE. By sending a delegation of 516 athletes and competing in 33 out of 40 sports and in 352 out of a total of 439 events, it aimed for a top three placing in the medals table. The final result showed that the Vietnamese team has attained its goal by ranking first in the medal tally with 18 gold, 24 silver and 11 bronze medals. The chief of mission to the games was Nguyen Hong Minh.