Cognomen Thanmas (Thanmas 
) , around the world, is a rare family name. The surname Thanmas is characteristic of India, where it is a very rare surname, Thailand, and the United States, where it is an extremely rare surname. Much less frequently, Thanmas is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Thanmas | United States, India, Thailand |