Surname Thanasanwanith (Thanasanwanith 
) , across the world, is a very rare family name. The surname Thanasanwanith is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thanasanwanith | Thailand |
Wiyada, Worawut, Thanakorn, and Pornchanok