Family name เจตสิทธิ์ (เจตสิทธิ์ 
) , in the world, is a very rare cognomen. The family name เจตสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, เจตสิทธิ์ is the forename as well as the last name.