Cognomen Phaisungnoen (Phaisungnoen 
) , in the entire world, is an extremely rare family name. The last name Phaisungnoen is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phaisungnoen | Thailand |
Thamanan, Thamrong, and Nanthaphorn