Cognomen Mandalyan (Мандалян 
, Mandalyan 
) , all over the world, is a very rare last name. The cognomen Mandalyan is characteristic of Armenia, where it is a rare surname, Russia, where it is a very rare surname, and Canada, where it is an extremely rare surname. In absolute terms, it is commonest in Russia, Armenia, and the United States. More frequently, Mandalyan is the forename as well as the last name.