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Cognomen Il'Ya (Илья , Il'Ya ) , in all the world, is a common last name. The last name Il'Ya is habitual in Belarus, where it is quite a common surname, Moldova, and Kyrgyzstan (explore the name in all countries). Measured by absolute frequency, it is the most numerous in Russia, Belarus, and Uzbekistan. Much more frequently, Il'Ya is the forename as well as the last name.