Family name Mcglennon (Mcglennon 
) , all around the world, is a rare cognomen. The cognomen Mcglennon is characteristic of Ireland, where it is a rare surname, the United Kingdom, and Singapore. Measured by absolute frequency, the name is most common in the United Kingdom, the United States, and Australia.
| VARIANT | COUNTRY |
|---|---|
| Mcglennon | Canada, Australia, United States, United Kingdom, Ireland |
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cornelius augustine mcglennon American politician and judge (1878-1931), US (b. 1878) |
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| felix mcglennon British songwriter and publisher, GB (b. 1856) |
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john austin shaw mcglennon politician in Massachusetts, US (born 1935), US (b. 1935) |
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| john mcglennon American politician in Virginia (born 1949), US (b. 1949) |
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