Family name ديان (Dejan 
, Dayan 
, Diagne 
) , around the world, is a widespread last name. The cognomen ديان is characteristic of North Macedonia, where it is a widespread surname, Senegal, and Israel, where it is quite a common surname (explore the name in all countries). Not in comparison with a country's population, the name is most common in Senegal, Turkey, and North Macedonia. Also, ديان is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Dejan | Bosnia and Herzegovina, Slovenia, North Macedonia, Serbia, Croatia |
| Dayan | Philippines, France, Sri Lanka, Turkey, Israel |
| Diagne | Democratic Republic of the Congo, France, Turkey, Senegal, United States |
| ديان | Yemen, Sudan, Iraq, Saudi Arabia, Iran |