Family name เรณูศักดิ์ (เรณูศักดิ์ 
, Raenoosak) , in all the world, is a very rare surname. The last name เรณูศักดิ์ is characteristic of South-eastern Asia, particularly Thailand, where it is a very rare surname. Much less frequently, เรณูศักดิ์ is the forename as well as the last name.