Cognomen Thanmaphiraksa (Thanmaphiraksa 
) , in the entire world, is an extremely rare last name. The surname Thanmaphiraksa is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thanmaphiraksa | Thailand |
Vashiravarin, and Chaiyavarin