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In all the world, کاسترو (Castro , Kastro , کاسترو) is a common principally masculine, but very seldom feminine first name. The given name کاسترو is characteristic of Guadeloupe, where it is quite a common masculine name, Luxembourg, where it is quite a rare epicene name, and Guatemala. Measured by absolute frequency, it is commonest in Philippines, Tanzania, and Angola. Much more frequently, کاسترو is the last name as well as the forename.
کاسترو is also a name for the fictitious and mythical characters: Castro , the operatic character in the opera Al gran sole carico d’amore, Al gran sole carico d'amore and Castro Gomes , character in Os Maias.