Surname วิเศษศักดิ์ (วิเศษศักดิ์ 
, Wisetsak 
) , in the world, is a rare last name. The cognomen วิเศษศักดิ์ is habitual in South-eastern Asia, particularly Thailand, where it is quite a rare surname. Likewise, วิเศษศักดิ์ is the forename as well as the last name.