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All around the world, Masto (Mast , Masto , Масто ) is a common predominantly boy's, but very seldom girly first name. The first name Masto is characteristic of India, where it is quite a rare predominantly boy's, but very seldom female name, United Arab Emirates, where it is quite a rare male name, and Saudi Arabia, where it is quite a rare mostly masculine, but infrequently female name. Measured by absolute frequency, it is the most numerous in India, Pakistan, and Indonesia. Likewise, Masto is the last name as well as the forename.
Masto is also a name for the fictitious and mythical characters: Masto Giorgio , the operatic character in the opera L'Armida immaginaria by Domenico Cimarosa.