Family name ภิญญรัตน์ (Pinyarat 
, ภิญญรัตน์ , Phinyarat ) , all over the world, is a very rare cognomen. The last name ภิญญรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. More frequently, ภิญญรัตน์ is the forename as well as the last name.