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Globally, Оттавио (Ottavio , Оттавио) is a common male first name. The given name Оттавио is characteristic of San Marino, where it is a common boy's name, Italy, where it is quite a common male name, and Switzerland, where it is a rare male name. Measured by absolute frequency, it most frequently occurs in Italy, Brazil, and Germany. Very seldom, Оттавио is the last name as well as the forename.
Оттавио is also a name for the fictitious and mythical characters: Ottavio , the operatic character in the opera Liebe und Eifersucht; in the duke's service; Ottavio , the operatic character in the opera Le donne curiose by Ermanno Wolf-Ferrari and Ottavio Cesare , the operatic character in the opera Cleopatra (Rossi).