Surname Mckaig (Mckaig 
) , all around the world, is quite a rare cognomen. The family name Mckaig is habitual in Canada, where it is a rare surname, the United States, and the United Kingdom.
| VARIANT | COUNTRY |
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| Mckaig | Australia, South Africa, Canada, United Kingdom, United States |
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william mcmahon mckaig American politician (1845-1907), US (b. 1845) |
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| cecil mckaig British cyclist, GB (b. 1885) |
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| rae mckaig Royal Navy admiral (1922-1996) (b. 1922) |
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| iain mckaig Ph.D. Old Dominion University 2001 |
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| stu mckaig college basketball player (1965–1967) Duke |
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| benny mckaig college basketball player (1979–1980) Wake Forest |
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| rosemary g mckaig researcher |
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