Around the globe, Carnahan (Carnahan 
) is an extremely rare male first name. Predominantly, Carnahan is the last name as well as the forename.
| VARIANT | COUNTRY |
|---|---|
| Carnahan | Canada, Taiwan, Australia, New Zealand, United States |
Carnahan is also a name for the fictitious and mythical characters: .
| worth carnahan comic book artist and editor, US (b. 1896) |
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| milroy carnahan college basketball player (1951–1951) Pittsburgh |
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| mackenzie carnahan American association football player, US (b. 1989) |
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| barrett carnahan American actor, US (b. 1992) |
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