Family name ดาสิทธิ์ (ดาสิทธิ์ 
) , in the entire world, is an extremely rare cognomen. The cognomen ดาสิทธิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ดาสิทธิ์ is the forename as well as the last name.