Family name Deleau (Deleau 
) , in the world, is quite a rare cognomen. The cognomen Deleau is habitual in France, where it is quite a rare surname, Belgium, and Argentina, where it is a rare surname. Much less frequently, Deleau is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Deleau | Belgium, Argentina, France, United States, Canada |
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nicolas deleau FR (b. 1797) |
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clémentine deleau French bearded lady, FR (b. 1865) |
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| eugène-pierre maurice deleau French military personnel, FR (b. 1879) |
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| gustave deleau French politician, FR (b. 1909) |
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| olivier deleau FR (b. 1912) |
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| emile deleau, jr. United States Army Medal of Honor recipient (1923-1945), US (b. 1923) |
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| pierre-henri deleau French film producer and actor, FR (b. 1942) |
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| jean-marie deleau French politician, FR (b. 1948) |
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| françois deleau French politician, FR (b. 1966) |
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| léa deleau FR |
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