Cognomen Saengthamchai (Saengthamchai 
) , all over the world, is an extremely rare surname. The family name Saengthamchai is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, Saengthamchai is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Saengthamchai | Thailand |