Family name ตรีศักดิ์ (ตรีศักดิ์ 
, Trisak 
, Threerasak ) , in the world, is a rare cognomen. The last name ตรีศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Also, ตรีศักดิ์ is the forename as well as the last name.