Cognomen Swennen (Swennen 
) , all around the world, is quite a rare surname. The family name Swennen is habitual in Western Europe, particularly Belgium, where it is quite a common surname, Netherlands, where it is a rare surname, and Austria. Not in comparison with a country's population, this name is the most popular in Belgium, Netherlands, and Canada. Much less frequently, Swennen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Swennen | Netherlands, Canada, Belgium, Germany, France |
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walter swennen Belgian painter, BE (b. 1946) |
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| rené swennen Belgian lawyer and writer, BE (b. 1942) |
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| guy swennen Belgian politician, BE (b. 1956) |
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| rony swennen (b. 1955) |
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| sandra swennen Belgian athletics competitor, BE (b. 1973) |
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| rony swennen researcher |
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| viviane swennen Belgian artist, BE |
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| rudy swennen researcher (ORCID 0000-0002-1528-526X) |
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| adam swennen Belgian performing artist, BE |
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| kim swennen senior software engineer |
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| erwin swennen researcher |
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| quirine swennen researcher |
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