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Last name Sysak (Sysak
, Сисак
, Сысак
) , globally, is quite a rare cognomen. The surname Sysak is characteristic of Armenia, where it is quite a common surname, Ukraine, where it is quite a rare surname, and Laos. Not in comparison with a country's population, it is commonest in Ukraine, Armenia, and Russia. Much less frequently, Sysak is the forename as well as the last name.