Surname รุ่งศักดิ์ (Rungsak 
, Roongsak , Sungsak 
) , in the world, is a very rare cognomen. The surname รุ่งศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is a very rare surname. Predominantly, รุ่งศักดิ์ is the forename as well as the last name.