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