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Family name Masko (Masko , Масько , Маско ) , all around the world, is quite a rare cognomen. The family name Masko is characteristic of Belarus, where it is quite a rare surname, Latvia, and Ukraine. Not in comparison with a country's population, it is commonest in Eastern Europe, particularly Russia, Belarus, and Ukraine. Very seldom, Masko is the forename as well as the last name.