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 | Serbia, Bosnia and Herzegovina, Croatia, Slovenia, North Macedonia |
| Dayan | Philippines, Israel, France, Sri Lanka, Turkey |
| Diagne | Senegal, France, United States, Democratic Republic of the Congo, Turkey |
| ديان | Iran, Yemen, Sudan, Saudi Arabia, Iraq |