Family name ธรรมสิงห์ (Dhamsingh 
, ธรรมสิงห์ 
) , across the world, is a rare surname. The family name ธรรมสิงห์ is habitual in Thailand, where it is a rare surname, and India, where it is an extremely rare surname. Also, ธรรมสิงห์ is the forename as well as the last name.