Surname ยิ่งศักดิ์ (Yingsak 
, Yingsuk , ยิ่งศักดิ์) , in all the world, is a very rare last name. The last name ยิ่งศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. More frequently, ยิ่งศักดิ์ is the forename as well as the last name.