Surname ดวงศิลา (Duangsila 
, ดวงศิลา , Doungsila) , all over the world, is a very rare cognomen. The last name ดวงศิลา is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Very seldom, ดวงศิลา is the forename as well as the last name.