Surname พิทยาวัฒน์ (พิทยาวัฒน์ 
) , all around the world, is a very rare family name. The surname พิทยาวัฒน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, พิทยาวัฒน์ is the forename as well as the last name.