Cognomen Trichaiyasit (Trichaiyasit 
) , in the world, is an extremely rare family name. The cognomen Trichaiyasit is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Trichaiyasit | Thailand |
Chanapath, Thanyaluk, and Channarong