Family name Caomhánach (Kavanagh 
, Caomhánach ) , throughout the world, is a common cognomen. The cognomen Caomhánach is habitual in Ireland, where it is a common surname, Jersey, where it is quite a common surname, and Australia (explore the name in all countries). Not in comparison with a country's population, the name is most common in Ireland, the United Kingdom, and the United States.
| VARIANT | COUNTRY |
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| Kavanagh | United Kingdom, Ireland, Canada, Australia, United States |
| Caomhánach | Ireland |
| domhnall caomhánach King of Leinster, IE (b. 1140) |
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art óg mac murchadha caomhánach Irish king, IE (b. 1357) |
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| art buidhe mac murchadha caomhánach (1447-1517) (b. 1447) |
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| mícheál caomhánach Irish hurler, IE (b. 1979) |
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| donnchadh mac muirchertach mac murchada caomhánach |
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| muircheartach mac donnchadh mac murchadha caomhánach |
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| art mór mac murchadha caomhánach |
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| art mór mac murchada caomhánach |
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| art mac murchada caomhánach |
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| muiris mac domhnall riabhach mac murchadha caomhánach |
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| donnchadh mac art mac murchadha caomhánach |
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| muirchertach mac muiris mac murchada caomhánach |
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| criomthann mac murchadha caomhánach |
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| diarmait mac murchada caomhánach |
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| domhnall mac art mac murchada caomhánach |
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