Cognomen Cotty (Cotty 
) , across the world, is quite a rare surname. The cognomen Cotty is characteristic of France, where it is quite a rare surname, Bolivia, where it is a rare surname, and South Africa. Not in comparison with a country's population, it most frequently occurs in France, the United States, and South Africa. Much less frequently, Cotty is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Cotty | United Kingdom, South Africa, United States, France, Venezuela |
| hermann-gaspard cotty French soldier (1772-1839), FR (b. 1772) |
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| jan cotty (b. 1801) |
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bill cotty South African rugby union footballer, ZA (b. 1875) |
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| jan cotty 1863-1939 (b. 1863) |
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| madeleine cotty French painter (b. 1884) |
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| bill cotty American lawyer and politician, US (b. 1946) |
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| zoë frances cotty (born 1972) (b. 1972) |
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| stéphane cotty French politician, FR (b. 1978) |
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| peter cotty researcher, ORCID id # 0000-0003-3887-833X |
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| adam cotty researcher |
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| mike cotty South African cyclist, ZA |
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| tristan le cotty (b. 1973) |
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