Surname Eiamvasant (Eiamvasant 
) , all around the world, is a very rare family name. The last name Eiamvasant is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Eiamvasant | Thailand |
Rewat, Manita, Nantawan, and Atthaneeya