Surname ดนุสิทธิ์ (ดนุสิทธิ์ 
) , across the world, is an extremely rare last name. The surname ดนุสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, ดนุสิทธิ์ is the forename as well as the last name.