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Cognomen Marusja (Маруся , Marusja , ماروسيا) , in the entire world, is a rare surname. The surname Marusja is characteristic of Armenia, where it is quite a common surname, Belarus, where it is a rare surname, and Kyrgyzstan. Measured by absolute frequency, the name is most common in Russia, Armenia, and Belarus. More frequently, Marusja is the forename as well as the last name.