Cognomen Rachaya (Rachaya 
) , all around the world, is a very rare surname. The surname Rachaya is characteristic of Thailand, where it is a very rare surname, and India, where it is an extremely rare surname. Predominantly, Rachaya is the forename as well as the last name.
Swami, Sitthisin, Angkapinit, Boonsawat, Kantawong, Rodcharoen, Dilokkulrapas, Langkasong, Norrasing, Yongpongsa, Chaichapor, Kaewkantha, Krajangyodhin, Tangjongrach, Hongkrisadakorn, Viriyamanuwong, Vimalapirat, Sakunasinha, Chanthakhot, Chaimongkol, Intarapornudom, Rattanaseema, Siraburaphat, Yoochuea, Jamparat, Phuritsiwat, Sutham, Pewsumang, Porana, Ruckawat, Nattee, Yernsuk, Mathews, Akkahad, Chuerdee, Khaowtong, Siripongsakul, Khongpo, Noosing, Nuthong, Indanon, Imtongsook, Olandamrongkul, Sukjinda, Benyakul, Kuntasawa, Promtong, Prukpitikul, Teetadhaemakorn, and Rungnirundornkul