Surname Trãi (Trãi 
) , all around the world, is a very rare family name. The surname Trãi is characteristic of South-eastern Asia, particularly Vietnam, where it is a very rare surname. Also, Trãi is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Trãi | Vietnam |
| thị trãi Vietnamese politician, VN (b. 1981) |
|