Cognomen Mclenaghan (Mclenaghan 
) , in the entire world, is a rare last name. The surname Mclenaghan is habitual in Canada, where it is a rare surname, Australia, and New Zealand. Measured by absolute frequency, the name is most common in Canada, the United States, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Mclenaghan | Australia, United Kingdom, Canada, United States, New Zealand |
| nathaniel mclenaghan Canadian politician, CA (b. 1845) |
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| raymond mclenaghan Canadian theoretical physicist and mathematician, CA (b. 1939) |
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