Family name พรหมศักดิ์ (Promsak 
, Pronsak , พรหมศักดิ์ ) , around the globe, is a rare cognomen. The last name พรหมศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, พรหมศักดิ์ is the forename as well as the last name.