Family name Mnatsyan (Мнацян 
, Mnatsyan 
, Мнатсян ) , all over the world, is a rare last name. The last name Mnatsyan is habitual in Armenia, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine, where it is an extremely rare surname. Likewise, Mnatsyan is the forename as well as the last name.