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