Cognomen ดำรงสิทธิ์ (Damrongsit 
, ดำรงสิทธิ์) , around the globe, is an extremely rare family name. The last name ดำรงสิทธิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Also, ดำรงสิทธิ์ is the forename as well as the last name.