Cognomen แหลมเพชร (Kempetch 
, แหลมเพชร , Kampetch ) , across the world, is a rare family name. The family name แหลมเพชร is characteristic of Thailand, where it is a rare surname, the United States, where it is an extremely rare surname, and India. Very seldom, แหลมเพชร is the forename as well as the last name.