Family name Дена (Dena 
, Дена 
, Dejna 
) , in the world, is a common surname. The surname Дена is characteristic of Bulgaria, where it is quite a common surname, Mali, where it is quite a rare surname, and Albania. Measured by absolute frequency, it is commonest in Bulgaria, Indonesia, and Egypt. More frequently, Дена is the forename as well as the last name.