Cognomen สังข์ธรรม (Sangthum 
, สังข์ธรรม , Sangathum) , in the entire world, is a very rare family name. The surname สังข์ธรรม is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, สังข์ธรรม is the forename as well as the last name.