Last name พจน์เจริญกิจ (พจน์เจริญกิจ 
) , all over the world, is a very rare surname. The family name พจน์เจริญกิจ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname.
| VARIANT | COUNTRY |
|---|---|
| พจน์เจริญกิจ | Thailand |