Cognomen พันธ์สี (พันธ์สี 
) , in the entire world, is a very rare family name. The family name พันธ์สี is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, พันธ์สี is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พันธ์สี | Thailand |