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Globally, Sidia (Sidia ) is quite a rare unisex first name. The forename Sidia is characteristic of Gambia, where it is quite a common boy's name, Panama, where it is quite a rare female name, and Costa Rica, where it is a rare feminine name. Measured by absolute frequency, the name is most common in Brazil, Gambia, and India. Likewise, Sidia is the last name as well as the forename.