Cognomen Danilyan (Данилян 
, Danilyan 
, Данильян 
) , throughout the world, is quite a rare family name. The family name Danilyan is characteristic of Russia, where it is a rare surname, Belarus, and Kazakhstan, where it is a very rare surname. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Russia, Ukraine, and Belarus. Very seldom, Danilyan is the forename as well as the last name.