Cognomen Mcclaskey (Mcclaskey 
) , in all the world, is quite a rare family name. The cognomen Mcclaskey is habitual in the United States, where it is a rare surname, Canada, where it is a very rare surname, and New Zealand. Not in comparison with a country's population, it most frequently occurs in the United States, Canada, and the United Kingdom.
| VARIANT | COUNTRY |
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| Mcclaskey | Brazil, Canada, United Kingdom, United States, Germany |
| walter mcclaskey American politician, US (b. 1918) |
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| carolyn m mcclaskey researcher (ORCID 0000-0002-0942-6281) |
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| tod mcclaskey college basketball player (1974–1975) Cornell |
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