Cognomen Archwichai (Archwichai 
) , in the entire world, is a very rare last name. The cognomen Archwichai is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Archwichai | Thailand |
Laa, Chatpawin, Potjanard, and Suriyachack