Surname พูลชัย (พูลชัย 
, Poonchai ) , all over the world, is a rare family name. The cognomen พูลชัย is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Also, พูลชัย is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Poonchai, พูลชัย | Thailand |