Family name Yatsamer (Yatsamer 
) , in the world, is a very rare cognomen. The surname Yatsamer is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Yatsamer | Thailand |
Orawan, Patinya, Keerakanit, Napitchaya, and Pornpitcha