Cognomen พันธ์กุล (Pankun 
, พันธ์กุล , Phankun ) , across the world, is a rare last name. The last name พันธ์กุล is characteristic of Thailand, where it is a rare surname, the United Kingdom, where it is an extremely rare surname, and the United States. Much less frequently, พันธ์กุล is the forename as well as the last name.