Cognomen Wanatchaya (Wanatchaya 
) , all over the world, is an extremely rare family name. Much more prevalently, Wanatchaya is the forename as well as the last name.
Sita, Tanee, Noppan, Saetang, Namyueang, Piamsiri, Sahabadin, Sahabbadin, Limkulpong, Hiranvongmongkol, and Chareonsilawart