Cognomen Deroo (Deroo 
) , worldwide, is quite a rare surname. The cognomen Deroo is characteristic of Belgium, where it is quite a rare surname, France, and Egypt, where it is a rare surname. Measured by absolute frequency, the name is most common in France, Belgium, and the United States. Very seldom, Deroo is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Deroo | Belgium, Egypt, United States, Canada, France |
| maurits deroo BE (b. 1902) |
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| andré deroo (b. 1903) |
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| louis deroo FR (b. 1903) |
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| charles deroo BE (b. 1910) |
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dave deroo American rock musician, US (b. 1974) |
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emilie deroo Belgian actress, BE (b. 1980) |
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david deroo French bicycle racer, FR (b. 1985) |
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sam deroo Belgian volleyball player and beach volleyball player, BE (b. 1992) |
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| andré deroo BE (b. 1933) |
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| eric deroo French historian, FR (b. 1952) |
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| jacques deroo French writer, FR (b. 1955) |
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| brian deroo American football wide receiver, US (b. 1956) |
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| neal deroo (b. 1951) |
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| wijnanda deroo NL (b. 1955) |
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| corinne deroo French politician, FR (b. 1969) |
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