Cognomen Sunkammarat (Sunkammarat 
) , in all the world, is a very rare family name. The surname Sunkammarat is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Sunkammarat | Thailand |
Rattana, Songkarn, Songkran, and Nichthawan