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All around the world, Кастанья (Castagna , Кастанья ) is a rare gender-neutral forename. The given name Кастанья is habitual in Southern Europe, particularly Italy, where it is a rare gender-neutral name. Much more prevalently, Кастанья is the last name as well as the forename.
Кастанья is also a name for the fictitious and mythical characters: Castagna , the operatic character in the opera Il burbero di buon cuore by Vicente Martín y Soler.