Surname Баяр (Bayar 
, Bajar 
, Баяр 
) , throughout the world, is a common cognomen. The family name Баяр is habitual in Mongolia, where it is quite a common surname, Turkey, and Tunisia, where it is quite a rare surname. Measured by absolute frequency, it most frequently occurs in Turkey, Philippines, and India. Very seldom, Баяр is the forename as well as the last name.