Cognomen Joostens (Joostens 
) , in the world, is a rare family name. The surname Joostens is habitual in Western Europe, particularly Belgium, where it is quite a rare surname, Netherlands, where it is a rare surname, and France, where it is a very rare surname.
| VARIANT | COUNTRY |
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| Joostens | Germany, Belgium, United States, France, Netherlands |
| paschier joostens author (16th century) (b. 1501) |
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| constantin joostens Belgian politician, BE (b. 1804) |
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maurice joostens Belgian diplomat (1862–1910), BE (b. 1862) |
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| antoon joostens Belgian painter (1820-1886), BE (b. 1820) |
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| florent joostens BE (b. 1835) |
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| paul joostens Belgian cubist, dadaist and avantgarde painter (1889-1960), BE (b. 1889) |
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| zoë joostens researcher (ORCID 0000-0003-0116-4499) |
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| jan pieter joostens |
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| renatus joostens BE |
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| jan joostens |
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