Cognomen พนมชัยจิรกุล (พนมชัยจิรกุล 
) , throughout the world, is an extremely rare family name. The surname พนมชัยจิรกุล is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| พนมชัยจิรกุล | Thailand |