Surname ทุมมาศ (Tumasa 
, ทุมมาศ 
) , throughout the world, is a rare cognomen. The cognomen ทุมมาศ is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname, and Philippines, where it is an extremely rare surname. Also, ทุมมาศ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Tumasa | India, Philippines, Brazil, Peru, South Africa |
| ทุมมาศ | Thailand |