Surname Iagubian (Ягубян 
, Iagubian 
) , in the world, is a rare last name. The cognomen Iagubian is characteristic of Georgia, where it is a rare surname, Russia, and Bulgaria. Measured by absolute frequency, this name is the most popular in Eastern Europe, particularly Russia, Ukraine, and Bulgaria. Very seldom, Iagubian is the forename as well as the last name.