Cognomen Kooyman (Kooyman 
) , worldwide, is quite a rare surname. The family name Kooyman is habitual in Netherlands, where it is quite a rare surname, Belgium, and Norway, where it is a rare surname. Not in comparison with a country's population, it is commonest in Netherlands, the United States, and Belgium.
| VARIANT | COUNTRY |
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| Kooyman | Netherlands, Belgium, Canada, Australia, United States |
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piet kooyman Dutch bicycle racer (1929-1988), NL (b. 1929) |
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| frank i. kooyman Dutch hymnwriter, NL (b. 1880) |
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| simon kooyman Netherlands-American composer, educator and conductor, NL (b. 1882) |
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| eduard cornelis kooyman Dutch university teacher (1916-1980), NL (b. 1916) |
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| rie kooyman NL (b. 1910) |
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zoë kooyman executive director of the Free Software Foundation, NL |
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| ed kooyman Belgian singer and guitarist, BE (b. 1948) |
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| barbara kooyman American musician, US (b. 1957) |
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| robert m. kooyman Australian botanist, AU (b. 1967) |
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| patricia kooyman researcher |
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| eduard c. kooyman Ph.D. Universiteit van Amsterdam 1946 |
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| david l kooyman researcher |
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| johanna kooyman Est 1723 - 25 Mar 1797 Willemstad |
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| robert kooyman researcher |
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| maarten kooyman researcher |
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