Surname Carns (Carns 
) , in the world, is quite a rare cognomen. The last name Carns is habitual in the United States, where it is a rare surname, Australia, and New Zealand. Measured by absolute frequency, it is commonest in the United States, Australia, and the United Kingdom. Likewise, Carns is the forename as well as the last name.
| VARIANT | COUNTRY |
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| Carns | Australia, Canada, Spain, United States, United Kingdom |
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edmund c. carns American politician, US (b. 1844) |
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michael p. c. carns United States general, US (b. 1937) |
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rachel carns American musician, US (b. 1969) |
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| jim carns American politician, US (b. 1940) |
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| r. l. carns American football coach, US |
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| jennifer carns researcher |
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| sally carns American graphic designer |
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| philip h. carns Ph.D. Clemson University 2005 |
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