Surname Delya (Деля 
, Delya 
, Дэля ) , around the world, is quite a common family name. The family name Delya is habitual in Bulgaria, where it is quite a common surname, the Democratic Republic of the Congo, where it is a rare surname, and Romania. In absolute terms, this name is the most popular in Bulgaria, the Democratic Republic of the Congo, and Indonesia. Likewise, Delya is the forename as well as the last name.