Cognomen Чагаи (Chagay 
, Chagai 
, Чагаи ) , all around the world, is a rare family name. The surname Чагаи is characteristic of Israel, where it is quite a rare surname, Argentina, where it is a very rare surname, and Kazakhstan. In absolute terms, it is the most numerous in Israel, Russia, and Argentina. Likewise, Чагаи is the forename as well as the last name.