Cognomen Suwanoatsawa (Suwanoatsawa 
) , in the entire world, is a very rare last name. The family name Suwanoatsawa is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Suwanoatsawa | Thailand |
Somchai, Uraiwan, Thanchanok, and Thanchanit