Family name Mckernan (Mckernan 
, Маккернан) , in the world, is quite a common surname. The last name Mckernan is habitual in Ireland, where it is quite a rare surname, Australia, and the United Kingdom. Not in comparison with a country's population, the name is most common in the United States, the United Kingdom, and Australia.
| VARIANT | COUNTRY |
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| Mckernan | United Kingdom, Australia, Ireland, United States, Canada |
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hugh mckernan IE (b. 1858) |
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| john q. mckernan American politician, US (b. 1823) |
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| frank mckernan (b. 1861) |
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john r. mckernan American politician, US (b. 1948) |
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ruth mckernan British neuroscientist, GB (b. 1958) |
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| ken mckernan Australian rules footballer, AU (b. 1911) |
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james mckernan British mathematician, GB (b. 1964) |
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| p. patrick mckernan American baseball executive, US (b. 1941) |
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| james a. mckernan American educationist, US (b. 1945) |
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| ron "pigpen" mckernan American musician (1945–1973), US (b. 1945) |
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| noel mckernan Australian rules footballer (b. 1945) |
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| jackie mckernan British athlete, GB (b. 1965) |
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| corey mckernan Australian rules footballer (b. 1973) |
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| clemente alonso mckernan Spanish triathlete, ES (b. 1978) |
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| adrian mckernan Ph.D. Queen's University of Belfast 2010 |
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