Cognomen Montchenu (Montchenu 
) , in the entire world, is a very rare last name. The cognomen Montchenu is habitual in France, where it is a very rare surname, and Brazil, where it is an extremely rare surname.
| VARIANT | COUNTRY |
|---|---|
| Montchenu | France, Brazil |
| jean de montchenu Roman Catholic bishop, FR (b. 1442) |
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| georgette de montchenu (1446-1511) (b. 1446) |
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marie-cléophas de montchenu (b. 1520) |
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| victor françois de montchenu French military leader, FR (b. 1764) |
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| claude françois de montchenu, baron de montchenu - Aft 1605 |
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| barthélémy de montchenu bishop of the Roman Catholic Church |
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| madeleine de montchenu |
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| jean claude de montchenu, seigneur de châteauneuf-de-gallaure |
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| marie de montchenu |
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