Surname Колоян (Колоян 
, Koloyan 
) , around the world, is a rare last name. The last name Колоян is characteristic of Armenia, where it is a rare surname, Russia, where it is a very rare surname, and Ukraine. In absolute terms, this name is the most popular in Russia, the United States, and Armenia. Also, Колоян is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Колоян | Ukraine, Armenia, Russia |
| Koloyan | United States, Canada, Armenia, Russia |