Last name Delplanque (Delplanque 
) , in the entire world, is quite a rare surname. The surname Delplanque is habitual in Western Europe, particularly France, where it is quite a rare surname, Belgium, and Switzerland, where it is a rare surname. Very seldom, Delplanque is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Delplanque | Australia, Switzerland, France, Belgium, United Kingdom |
| constant delplanque French miner (1859-1935) (b. 1859) |
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| albert delplanque (b. 1866) |
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| victor delplanque French entrepreneur (1881-1944), FR (b. 1881) |
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| georges delplanque French painter (1903-1999), FR (b. 1903) |
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| guy delplanque French politician, FR (b. 1951) |
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| joël delplanque French politician, FR (b. 1951) |
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| joël delplanque FR (b. 1946) |
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| lionel delplanque French film director, FR (b. 1972) |
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| jean-noël delplanque (b. 1963) |
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| jean-pierre delplanque researcher |
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| pascal delplanque French politician, FR |
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| sylvain delplanque researcher |
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| jerome delplanque researcher |
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| yves delplanque cyclist, FR |
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| andré delplanque |
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