Last name Kuenen (Kuenen 
) , worldwide, is a rare family name. The last name Kuenen is characteristic of Netherlands, where it is quite a rare surname, Hong Kong, where it is a rare surname, and Belgium. Measured by absolute frequency, it is the most numerous in Western Europe, particularly Netherlands, Germany, and Belgium. Very seldom, Kuenen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Kuenen | Germany, Portugal, Belgium, Hong Kong, Netherlands |
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abraham kuenen Dutch theologian, NL (b. 1828) |
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johannes petrus kuenen Dutch physicist, NL (b. 1866) |
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donald johan kuenen Dutch biologist, NL (b. 1912) |
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| willem abraham kuenen professor at Leiden University, NL (b. 1873) |
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| philip henry kuenen Dutch geologist (1902-1976), NL (b. 1902) |
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| gerrit jan kuenen Dutch SOE agent, NL (b. 1918) |
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| gijs kuenen Dutch microbiologist, NL (b. 1940) |
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| willem abraham kuenen M.D. Universiteit Leiden 1901 |
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