Surname Kwiecien (Kwiecien 
, Kwiecień 
, Квечень 
) , around the world, is a common cognomen. The cognomen Kwiecien is characteristic of Poland, where it is quite a common surname, Cyprus, where it is quite a rare surname, and Ireland, where it is a rare surname. In absolute terms, it is the most numerous in Poland, the United States, and France. Also, Kwiecien is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kwiecien | United Kingdom, United States, Poland, Canada, France |
| Kwiecień | Germany, United Kingdom, United States, Poland, France |
| Квечень | Ukraine |
| linda kwiecien French politician, FR (b. 1977) |
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| ola kwiecien researcher, ORCID id # 0000-0001-6018-9181 |
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| jacek m kwiecien researcher |
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| susan y kwiecien researcher (ORCID 0000-0002-6683-8127) |
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| kamila kwiecien researcher |
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| robert kwiecien researcher |
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| monika kwiecien researcher |
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| iwona kwiecien researcher |
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| nicholas w kwiecien |
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| pavel kwiecien (b. 1983) |
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