Family name Sitthivet (Sitthivet 
) , in the world, is a rare surname. The surname Sitthivet is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sitthivet | Laos, Thailand |
Amnuai, and Inthou One