Cognomen Picou (Picou 
) , around the globe, is quite a rare surname. The family name Picou is characteristic of Trinidad and Tobago, where it is quite a rare surname, France, and the United States, where it is a rare surname. Measured by absolute frequency, it most frequently occurs in the United States, France, and Belgium.
| VARIANT | COUNTRY |
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| Picou | France, United States, Belgium, Trinidad and Tobago, Algeria |
| robert picou Person; male; Painter and Engraver; printmaker; painter/draughtsman; French; c. 1593; 1671, FR (b. 1593) |
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| henri jean picou French painter, FR (b. 1784) |
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| henri-pierre picou French painter (1824-1895), FR (b. 1824) |
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alphonse picou African American jazz clarinetist, US (b. 1878) |
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| victor romuald picou FR (b. 1855) |
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| john picou college basketball player (1994–1995) Southeastern Louisiana |
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| erin m. picou hearing and speach specialist |
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| frédéric picou researcher |
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| clarence picou horse trainer |
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| james earl picou horse trainer |
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| john picou college basketball player (1991–1992) Louisiana State |
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