Family name Bilik (Bilik 
, بليج 
, Билык 
) , globally, is quite a common surname. The surname Bilik is characteristic of Eastern Europe, particularly Slovakia, where it is quite a common surname, Czechia, where it is quite a rare surname, and Hungary. In absolute terms, it is the most numerous in Eastern Europe, particularly Russia, Slovakia, and Czechia. Very seldom, Bilik is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Bilik | Poland, Indonesia, Czechia, United States, Slovakia |
| بليج | Palestinian Territory, Turkey, Yemen |
| Билык | Kazakhstan, Ukraine, Belarus, United States, Russia |
| Билик | Kazakhstan, Ukraine, Belarus, Bulgaria, Russia |
| adam bilik (b. 1899) |
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| dorothy bilik American literary scholar (b. 1928) |
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| jerry bilik American composer, US (b. 1933) |
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| franz bilik AT (b. 1937) |
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| andrzej bilik PL (b. 1939) |
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| peter bilik Austrian basketball player, AT (b. 1950) |
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| jen bilik publisher, US (b. 1969) |
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| özlem bilik researcher |
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| maria bilik |
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| naran bilik |
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