Cognomen Phounsiri (Phounsiri 
) , across the world, is an extremely rare last name. The surname Phounsiri is habitual in Northern America, particularly the United States, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Phounsiri | United States |
| krysada panusith phounsiri American poet, US (b. 1988) |
|