Family name สมเสริฐ (สมเสริฐ 
) , across the world, is a very rare cognomen. The cognomen สมเสริฐ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, สมเสริฐ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมเสริฐ | Thailand |