Cognomen Srisawathsak (Srisawathsak 
) , all over the world, is a very rare family name. The surname Srisawathsak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Srisawathsak | Thailand |
Suwan, Supasit, Sumitra, Chayapa, and Thanavadee