Last name Kupalian (Купалян 
, Kupalian 
) , throughout the world, is a very rare cognomen. The surname Kupalian is habitual in Belarus, where it is a very rare surname, Georgia, and Russia. Measured by absolute frequency, it is commonest in Eastern Europe, particularly Russia, Belarus, and Ukraine. Very seldom, Kupalian is the forename as well as the last name.