Family name Ninphayak (Ninphayak 
) , across the world, is a very rare last name. The family name Ninphayak is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Ninphayak | Thailand |
Chutima, Naruedi, Charuesri, and Chalongchai