Cognomen Pamornsiri (Pamornsiri 
) , in all the world, is a very rare last name. The family name Pamornsiri is habitual in South-eastern Asia, particularly Thailand, where it is a rare surname. Very seldom, Pamornsiri is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Pamornsiri | Malaysia, Thailand |