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