Cognomen Phinyaphan (ภิญญพันธุ์ 
, Phinyaphan , ภิญญะพันธ์ ) , all around the world, is a very rare family name. The surname Phinyaphan is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, Phinyaphan is the forename as well as the last name.