Surname วิทยรัตน์ (วิทยรัตน์ 
, Witayarat , Wittirat ) , across the world, is a very rare family name. The last name วิทยรัตน์ is characteristic of South-eastern Asia, particularly Thailand, where it is a rare surname. Much less frequently, วิทยรัตน์ is the forename as well as the last name.