Family name ดาบชัย (ดาบชัย 
, Dabchai 
) , worldwide, is a very rare cognomen. The family name ดาบชัย is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. More frequently, ดาบชัย is the forename as well as the last name.