Cognomen พันธ์ชัยเพชร (Phanchaipet 
, พันธ์ชัยเพชร ) , all around the world, is an extremely rare last name. The cognomen พันธ์ชัยเพชร is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Likewise, พันธ์ชัยเพชร is the forename as well as the last name.