Cognomen พจน์ชนะ (พจน์ชนะ 
) , throughout the world, is an extremely rare last name. The last name พจน์ชนะ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More prevalently, พจน์ชนะ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พจน์ชนะ | Thailand |