Cognomen Laenen (Laenen 
) , worldwide, is quite a rare family name. The cognomen Laenen is habitual in Belgium, where it is quite a common surname, Netherlands, where it is quite a rare surname, and Uruguay. Measured by absolute frequency, it is the most numerous in Western Europe, particularly Belgium, Netherlands, and France. Much less frequently, Laenen is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Laenen | Germany, France, Netherlands, United States, Belgium |
| françois-henri laenen Belgian architect and urban planner, BE (b. 1801) |
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| edward laenen BE (b. 1815) |
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| jozef laenen Belgian seculary canon and archivist (1871-1940), BE (b. 1871) |
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| jean laenen Belgian painter, BE (b. 1881) |
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| jan laenen Belgian politician, BE (b. 1893) |
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| gerard laenen BE (b. 1899) |
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| mon laenen Belgian politician (1925-2011), BE (b. 1925) |
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| petrus maria laenen NL (b. 1916) |
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| jean-paul laenen Belgian sculptor, BE (b. 1931) |
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| gie laenen Dutch writer, BE (b. 1944) |
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| mariette laenen cyclist, BE (b. 1950) |
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| jan vander laenen Belgian writer, BE (b. 1960) |
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| annouschka laenen researcher |
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| antonius laenen researcher |
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| freya vander laenen researcher |
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