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Last name Sirio (Siri , Sirio , Винченцо ) , globally, is a common surname. The surname Sirio is habitual in Latin America and the Caribbean, particularly Uruguay, where it is quite a common surname, the Dominican Republic, where it is quite a rare surname, and Argentina. Measured by absolute frequency, this name is the most popular in Thailand, Argentina, and India. Likewise, Sirio is the forename as well as the last name.