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Globally, Giannino (Giannino ) is quite a common masculine first name. The forename Giannino is habitual in San Marino, where it is quite a common masculine name, Italy, and Peru, where it is a very rare boy's name. Measured by absolute frequency, it most frequently occurs in Italy, Brazil, and France. Very seldom, Giannino is the last name as well as the forename.
Giannino is also a name for the fictitious and mythical characters: Giannino , the operatic character in the opera La diavolessa by Baldassare Galuppi.