Family name เดชสิทธิ์ (เดชสิทธิ์ 
, Dejsit , Detsit ) , all around the world, is a very rare cognomen. The cognomen เดชสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much more prevalently, เดชสิทธิ์ is the forename as well as the last name.