Cognomen Coia (Coia 
) , across the world, is quite a rare last name. The surname Coia is habitual in Italy, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and Australia. In absolute terms, it most frequently occurs in the United States, Italy, and the United Kingdom. Very seldom, Coia is the forename as well as the last name.
| jack coia Coia, Giacomo Antonio [Jack] (1898–1981), architect (b. 1898) |
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| emilio coia Scottish artist, GB (b. 1911) |
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maximin coia figure skater, FR (b. 1983) |
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| angelo coia American football player (1938-2013), US (b. 1938) |
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| manuel coia Spanish sculptor (1940-2017), ES (b. 1940) |
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| denise coia Consultant psychiatrist and Chair of Healthcare Improvement Scotland, GB (b. 1952) |
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| lorenzo coia Italian politician, IT (b. 1955) |
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| paul coia British television presenter, GB (b. 1960) |
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| coia ibañez ferrater Spanish painter, ES (b. 1962) |
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| coia cabré (b. 1955) |
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| john coia researcher |
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| heidi coia researcher |
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| valentina coia researcher |
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| vincenzo coia Ph.D. University of British Columbia 2017 |
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| antony coia IT (b. 1979) |
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