Last name Phatthanathanya (Phatthanathanya 
) , in the entire world, is a very rare family name. The family name Phatthanathanya is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phatthanathanya | Thailand |
Bunyada, Phakharat, and Natthaphong