Surname หมื่นเพชร (Muphet 
, หมื่นเพชร, Meunpet ) , in all the world, is a very rare last name. The surname หมื่นเพชร is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, หมื่นเพชร is the forename as well as the last name.