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