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