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All over the world, Olegario (Olegario , Olegário ) is a common masculine first name. The forename Olegario is habitual in Equatorial Guinea, where it is quite a common boy's name, Mexico, and Argentina, where it is quite a rare masculine name. Measured by absolute frequency, the name is most common in Latin America and the Caribbean, particularly Mexico, Brazil, and Argentina. Likewise, Olegario is the last name as well as the forename.