Surname Proteau (Proteau 
) , across the world, is quite a rare cognomen. The surname Proteau is characteristic of Canada, where it is quite a rare surname, France, where it is a rare surname, and New Zealand. Not in comparison with a country's population, it is commonest in Canada, France, and the United States.
| VARIANT | COUNTRY |
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| Proteau | Belgium, United States, Canada, France, New Zealand |
| jean proteau FR (b. 1752) |
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| guillaume marcellin proteau French officer, FR (b. 1772) |
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| évariste proteau French official, FR (b. 1880) |
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| tony proteau French jazz sax player, band leader, US (b. 1921) |
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| rodrigue proteau Canadian actor, CA (b. 1956) |
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| guy proteau French politician, FR (b. 1963) |
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| josiane proteau performing artist in Canada |
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| philip j proteau researcher |
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| martin proteau performing artist in Canada |
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| luc proteau |
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| jesse proteau (b. 1985) |
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| annie soleil proteau Canadian actress, television host and radio personality, CA (b. 1998) |
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