Surname Rauy (Rauy 
) , in all the world, is a rare last name. The last name Rauy is habitual in Israel, where it is quite a rare surname, India, where it is a very rare surname, and Malaysia, where it is an extremely rare surname. In absolute terms, it is the most numerous in Israel, India, and Vietnam. Likewise, Rauy is the forename as well as the last name.