Cognomen Pusomsri (Pusomsri 
) , throughout the world, is a very rare last name. The family name Pusomsri is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| Pusomsri | Thailand |
Pakjira, Chalermchon, and Phitchayapak