Throughout the world, Дилян (Diljan 
, Dilian 
, Dilyan 
) is quite a common unisex forename. The forename Дилян is characteristic of Bulgaria, where it is quite a rare boy's name, Paraguay, where it is quite a rare female name, and Qatar, where it is a rare boy's name. In absolute terms, it is commonest in India, Bulgaria, and Brazil. Much less frequently, Дилян is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Diljan | Pakistan, Brazil, Saudi Arabia, India, United Arab Emirates |
| Dilian | Brazil, Bulgaria, Paraguay, India, Honduras |
| Dilyan | Spain, Bulgaria, United States, India, Venezuela |
| Дилян | Bulgaria, Kazakhstan, Russia, Ukraine |
|
дилян колев Bulgarian footballer, BG (b. 1988) |
|
|
дилян калчев BG (b. 1996) |
|
| дилян хубанов BG (b. 1959) |
|
|
| дилян георгиев Bulgarian malacologist and naturalist, BG (b. 1979) |
|
|
| дилян каравелев Bulgarian association football player, BG (b. 1984) |
|