Last name Kuyko (Kuyko 
) , throughout the world, is an extremely rare cognomen. The cognomen Kuyko is characteristic of Eastern Europe, particularly Ukraine, where it is an extremely rare surname.
| foma kuyko Belarusian Righteous Among the Nations, BY (b. 1894) |
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| yelena kuyko Righteous Among the Nations, BY (b. 1899) |
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| yelena kuyko Belarusian Righteous Among the Nations, BY (b. 1926) |
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