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Family name Jacko (Jacko , Яцко , ג'קו ) , around the world, is quite a common last name. The last name Jacko is habitual in Eastern Europe, particularly Slovakia, where it is quite a common surname, Belarus, where it is quite a rare surname, and Ukraine. Not in comparison with a country's population, it most frequently occurs in Eastern Europe, particularly Ukraine, Slovakia, and Russia. Likewise, Jacko is the forename as well as the last name.