Family name Ruayrin (Ruayrin 
) , all over the world, is an extremely rare last name. The surname Ruayrin is habitual in South-eastern Asia, particularly Thailand, where it is an extremely rare surname. Much more frequently, Ruayrin is the forename as well as the last name.
Sakdajivacharoen, Hongdoxmai, Chunvijitra, Pedsalabkaew, Thongkum, Sirivaravat, Seangthong, Chotikorn, Prasitpun, Naramonthon, Naramonton, and Yoshimura