Surname Hajko (Hajko 
, Гайко 
) , throughout the world, is quite a rare family name. The cognomen Hajko is characteristic of Eastern Europe, particularly Belarus, where it is quite a rare surname, Slovakia, and Ukraine. In absolute terms, this name is the most popular in Eastern Europe, particularly Russia, Ukraine, and Belarus. Much less frequently, Hajko is the forename as well as the last name.
| jan hajko (b. 1510) |
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dalimír hajko SK (b. 1944) |
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| vladimír hajko Czechoslovak member of Czechoslovak parliament, academic, physicist and slovak nation politician, SK (b. 1920) |
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| jozef hajko (b. 1918) |
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| pavel hajko (b. 1952) |
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| jozef hajko (b. 1962) |
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| pavica hajko SI |
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