Cognomen Landreau (Landreau 
) , worldwide, is quite a rare surname. The surname Landreau is characteristic of France, where it is quite a rare surname, New Zealand, where it is a rare surname, and Canada, where it is a very rare surname. In absolute terms, it is commonest in France, the United States, and Spain. Very seldom, Landreau is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Landreau | Argentina, Canada, France, United States, Spain |
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simon landreau French politician (1733-1803), FR (b. 1733) |
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| félix landreau French poet, FR (b. 1903) |
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fabrice landreau French rugby union footballer, FR (b. 1968) |
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mickaël landreau French association football player and manager, FR (b. 1979) |
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| bernard landreau French politician, FR (b. 1945) |
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| odile landreau French politician, FR (b. 1955) |
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| alain landreau French politician, FR (b. 1957) |
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| dominique landreau French politician, FR (b. 1968) |
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| isabelle landreau French lawyer, FR |
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| joseph landreau Roman Catholic clergyman |
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| aline landreau |
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