Family name Buyck (Buyck 
) , across the world, is quite a rare cognomen. The surname Buyck is habitual in Western Europe, particularly Belgium, where it is quite a common surname, France, where it is a rare surname, and Switzerland. Measured by absolute frequency, this name is the most popular in Belgium, France, and the United States. Much less frequently, Buyck is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Buyck | Netherlands, France, Canada, United States, Belgium |
| joost sijbrantsz. buyck NL (b. 1505) |
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| joost sijbrandtsz buyck (b. 1505) |
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| jacobus buyck (b. 1545) |
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pierre françois buyck Belgian architect, BE (b. 1805) |
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| joannes buyck (b. 1761) |
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| rené buyck Belgian architect (1850-1923), BE (b. 1850) |
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| edward pierre buyck (b. 1888) |
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| michel buyck Belgian bicycle racer, BE (b. 1912) |
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| bart buyck botanist (b. 1959) |
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| christophe buyck researcher (ORCID 0000-0002-5711-1161) |
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| inez buyck researcher (ORCID 0000-0002-3711-5165) |
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| griet buyck researcher |
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| jean-luc buyck French trade unionist, FR |
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| julien m buyck researcher (b. 1980) |
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| thomas buyck researcher |
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