Surname Vilachith (Vilachith 
) , in all the world, is a rare last name. The last name Vilachith is habitual in South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Vilachith | Laos, Thailand |
Phatxa, Vanpasa, Phouangvone, and Viengkhone