Surname Thamwichit (Thamwichit 
) , in the entire world, is a very rare cognomen. The family name Thamwichit is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Thamwichit | Thailand |
Phichet, Thitima, Apinyanat, Witthawat, and Pitchayanee