Surname Janiec (Janiec 
) , in the world, is quite a rare cognomen. The surname Janiec is habitual in Poland, where it is quite a rare surname, France, where it is a rare surname, and Norway. Not in comparison with a country's population, it is commonest in Poland, the United States, and France. Also, Janiec is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Janiec | Germany, Canada, France, Poland, United States |
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łukasz janiec ice hockey player (1984-), PL (b. 1984) |
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| waldemar janiec Polish pharmacist, PL (b. 1935) |
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| zdzisław janiec Polish Catholic clergyman, PL (b. 1951) |
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| eugeniusz janiec Polish mathematician, PL |
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| mikael janiec researcher |
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| robert janiec researcher |
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| artur janiec PL (b. 1974) |
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| bogna janiec PL |
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| agnieszka janiec (b. 1980) |
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| mischa janiec Swiss strength athlete and influencer, CH (b. 1991) |
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| anthony janiec FR (b. 1984) |
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