Cognomen Tanthaprasart (Tanthaprasart 
) , all around the world, is a very rare family name. The surname Tanthaprasart is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname.
| VARIANT | COUNTRY |
|---|---|
| Tanthaprasart | Thailand |
Penpak, Sitthisak, and Kornchawal