Cognomen Praznik (Praznik 
, Празник 
) , throughout the world, is a rare last name. The cognomen Praznik is habitual in Slovenia, where it is quite a common surname, Austria, where it is a rare surname, and Croatia. Not in comparison with a country's population, this name is the most popular in Slovenia, the United States, and Austria. Much less frequently, Praznik is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Praznik | Germany, Austria, United States, Canada, Slovenia |
| Празник | Ukraine |
| david praznik Victim of the Holocaust, PL (b. 1890) |
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| zdravko praznik Slovenian politician, SI (b. 1924) |
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rok praznik Slovene handball player, SI (b. 1980) |
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| anton praznik correspondence chess player, SI (b. 1949) |
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| niko praznik SI (b. 1948) |
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| darren praznik Canadian politician, CA (b. 1961) |
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| niko praznik chess player, SI (b. 1979) |
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| werner praznik researcher |
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| monika praznik Slovenian carcinologist, SI |
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| katja praznik SI (b. 1978) |
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| adrijan praznik Adrijan Praznik * 13. 5. 1988 , Lublaň (Ljubljana) , Slovinsko (Slovenia) painter nationality: Slovenian sex: male web: http://adrijan.portfoliobox.me, SI (b. 1988) |
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| arne praznik SI |
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| mihaela fridrih praznik SI |
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| zvonka praznik SI |
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| blaž praznik SI |
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