Last name Гагян (Гагян 
, Gagian 
, Gagjan 
) , in the world, is a very rare family name. The family name Гагян is characteristic of Russia, where it is a very rare surname, Israel, and Ukraine, where it is an extremely rare surname. Measured by absolute frequency, this name is the most popular in Russia, the United States, and India. Likewise, Гагян is the forename as well as the last name.