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Last name Guja (Guja , Гужа , Гуя ) , in the world, is quite a common cognomen. The last name Guja is habitual in Moldova, where it is quite a common surname, Georgia, where it is quite a rare surname, and Bosnia and Herzegovina. Not in comparison with a country's population, it most frequently occurs in India, Pakistan, and Ethiopia. Likewise, Guja is the forename as well as the last name.