Surname Mahatthanaphak (Mahatthanaphak 
) , worldwide, is a very rare family name. The family name Mahatthanaphak is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Mahatthanaphak | Thailand |
Suruj, Suwisit, Somphop, Weerawan, Aranchanok, and Kanjanaporn