Family name พาชัยยุทธ (พาชัยยุทธ 
, Pachaiyuth ) , globally, is a very rare surname. The family name พาชัยยุทธ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, พาชัยยุทธ is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| พาชัยยุทธ, Pachaiyuth | Thailand |