Family name เต็มสิทธิ์ (เต็มสิทธิ์ 
) , around the world, is an extremely rare last name. The family name เต็มสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More frequently, เต็มสิทธิ์ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| เต็มสิทธิ์ | Thailand |