Cognomen Playfair (Playfair 
) , worldwide, is a rare last name. The cognomen Playfair is habitual in Suriname, where it is quite a common surname, Australia, where it is a rare surname, and Canada. In absolute terms, it is the most numerous in the United Kingdom, Canada, and Australia. Very seldom, Playfair is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Playfair | United Kingdom, Australia, Suriname, Canada, United States |
| james playfair (born 1646) (b. 1646) |
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john playfair Scottish scientist and mathematician, GB (b. 1748) |
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hugh lyon playfair Scottish soldier and Provost of St Andrews, GB (b. 1787) |
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| james playfair Scottish Principal of St Andrews University (1738-1819) (b. 1738) |
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william henry playfair Scottish architect (1790-1857), GB (b. 1790) |
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| james playfair British architect (1755-1794), GB (b. 1755) |
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| william playfair British mathematician, engineer and political economist (1759-1823), GB (b. 1759) |
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| patrick playfair (born 1765) (b. 1765) |
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| jean playfair (born 1777) (b. 1777) |
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| george playfair (1782-1846) (b. 1782) |
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thomas playfair politician, butcher and ships providore (b. 1832) |
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william smoult playfair physician and academic, GB (b. 1835) |
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| andrew w. playfair Canadian politician, CA (b. 1790) |
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| charles playfair gunsmith (1796-1859) (b. 1796) |
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| margaret playfair (1803-1881) (b. 1803) |
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