Surname พจน์นาถ (พจน์นาถ 
) , throughout the world, is a very rare last name. The family name พจน์นาถ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, พจน์นาถ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พจน์นาถ | Thailand |