Family name ตรีสิทธิ์ (ตรีสิทธิ์ 
) , across the world, is a rare surname. The last name ตรีสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, ตรีสิทธิ์ is the forename as well as the last name.