Last name จอมศักดิ์ (จอมศักดิ์ 
, Jomsak , Chomsak ) , all around the world, is a rare surname. The family name จอมศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Likewise, จอมศักดิ์ is the forename as well as the last name.