Family name พลชัยวัฒน์ (พลชัยวัฒน์ 
, Phonchaiwat ) , in the world, is a very rare cognomen. The family name พลชัยวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Likewise, พลชัยวัฒน์ is the forename as well as the last name.