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Surname Kolos (Kolos , Колос , Colosse ) , globally, is a common last name. The surname Kolos is characteristic of Eastern Europe, particularly Belarus, where it is quite a common surname, Ukraine, and Hungary, where it is quite a rare surname. Not in comparison with a country's population, it is the most numerous in Eastern Europe, particularly Ukraine, Russia, and Belarus. Much less frequently, Kolos is the forename as well as the last name.