Last name อดุลศักดิ์ (อดุลศักดิ์ 
, Adulsak 
, Adoonsak ) , around the world, is an extremely rare cognomen. The last name อดุลศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more prevalently, อดุลศักดิ์ is the forename as well as the last name.