Last name Багий (Bagiy 
, Bagy 
, Bagii 
) , throughout the world, is quite a rare surname. The cognomen Багий is habitual in Mongolia, where it is quite a rare surname, Azerbaijan, and Egypt, where it is a rare surname. Measured by absolute frequency, it is the most numerous in India, Egypt, and Indonesia. Very seldom, Багий is the forename as well as the last name.