Family name รัตธิยา (รัตธิยา 
) , in the world, is an extremely rare cognomen. The surname รัตธิยา is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. More prevalently, รัตธิยา is the forename as well as the last name.
เหมวงษ์, and วงศ์สุรินทร์