Cognomen Hefferan (Hefferan 
) , all around the world, is a rare family name. The last name Hefferan is habitual in Australia, where it is a rare surname, Canada, and the United Kingdom. Not in comparison with a country's population, it is commonest in the United States, Australia, and the United Kingdom.
| VARIANT | COUNTRY |
|---|---|
| Hefferan | Australia, Mexico, Canada, United States, United Kingdom |
|
mary hefferan American bacteriologist, US (b. 1873) |
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| matthew hefferan researcher |
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| kevin hefferan researcher |
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| tara hefferan |
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| matthew hefferan |
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| a. hefferan |
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