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Last name Kosyak (Косяк , Kosyak , Косиак ) , in all the world, is quite a common surname. The last name Kosyak is habitual in Ukraine, where it is quite a rare surname, Belarus, and Kazakhstan. Measured by absolute frequency, it most frequently occurs in Eastern Europe, particularly Ukraine, Russia, and Belarus.
Mr, Pamela, Ruslan, Dmitry, Galina, Tamara, Nikita, Ivanna, Michael, Lindsay, Andrey, Tatiana, Natalya, Natasha, Svitlana, Alexandr, Cristina, Alexandre, Alexander, Anastasia, Christina, Natalia, Sergey, Sergiy, Mykola, Ms, Alex, Alla, Anna, Lera, Igor, Olga, Oleg, Maria, Maxim, Pavel, Peter, Roman, Daria, Tania, Tanya, Elena, Irina, Iryna, Yuriy, Mariya, Cassandra, and Valentine