Cognomen Khachanyan (Хачанян 
, Khachanyan 
) , all around the world, is a rare family name. The surname Khachanyan is habitual in Armenia, where it is a rare surname, Belarus, and Russia. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Ukraine, and Belarus. Very seldom, Khachanyan is the forename as well as the last name.