Family name สมเทศ (สมเทศ 
) , all over the world, is a rare surname. The last name สมเทศ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, สมเทศ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| สมเทศ | Thailand |