Cognomen Bilbulyan (Билбулян 
, Bilbulyan 
, Бильбулян 
) , in all the world, is a rare last name. The last name Bilbulyan is characteristic of Armenia, where it is a rare surname, Georgia, and Russia, where it is a very rare surname. Not in comparison with a country's population, the name is most common in Russia, the United States, and Armenia. Likewise, Bilbulyan is the forename as well as the last name.