Family name พรหมสร (Promsorn 
, พรหมสร , Phomsorn ) , all around the world, is quite a rare surname. The family name พรหมสร is characteristic of Thailand, where it is quite a rare surname, Malaysia, where it is a very rare surname, and the United Kingdom, where it is an extremely rare surname. In absolute terms, it most frequently occurs in Thailand, Malaysia, and the United States. Very seldom, พรหมสร is the forename as well as the last name.