Surname Sloian (Слоян 
, Sloian 
) , around the globe, is a rare cognomen. The cognomen Sloian is characteristic of Russia, where it is a rare surname, Georgia, and Austria. Not in comparison with a country's population, it is the most numerous in Russia, Ukraine, and Austria. Also, Sloian is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Слоян | Ukraine, Russia, Georgia, Armenia |
| Sloian | Austria, Georgia, Israel |