Cognomen Intharaphithak (Intharaphithak 
) , in the entire world, is a rare last name. The cognomen Intharaphithak is characteristic of South-eastern Asia, particularly Laos, where it is quite a rare surname, and Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Intharaphithak | Laos, Thailand |