Cognomen เพิ่มศักดิ์ (Permsak 
, Phermsak , Paermsak ) , across the world, is an extremely rare family name. The family name เพิ่มศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, เพิ่มศักดิ์ is the forename as well as the last name.