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Surname Кирилов (Kirilov
, Кирилов
, Kirilow
) , in the entire world, is a common cognomen. The family name Кирилов is habitual in Bulgaria, where it is a common surname, Cyprus, where it is quite a rare surname, and Ukraine. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Bulgaria, Russia, and Ukraine. Much less frequently, Кирилов is the forename as well as the last name.