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Around the world, Duca (Duca , Дука , 杜卡 ) is a rare epicene given name. The given name Duca is characteristic of Bulgaria, where it is quite a rare unisex name, Romania, and Serbia, where it is a rare girly name. In absolute terms, it most frequently occurs in Italy, Romania, and Bulgaria. More frequently, Duca is the last name as well as the forename.
Duca is also a name for the fictitious and mythical characters: Duca Lamberti , the literary figure and Duca d'Alziras , the operatic character in the opera La zingara by Gaetano Donizetti.