Last name Hefferon (Hefferon 
) , globally, is a rare surname. The family name Hefferon is habitual in Ireland, where it is quite a rare surname, the United Kingdom, where it is a rare surname, and New Zealand. In absolute terms, it is the most numerous in the United States, the United Kingdom, and Ireland.
| VARIANT | COUNTRY |
|---|---|
| Hefferon | United Kingdom, Ireland, Canada, Australia, United States |
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charles hefferon athletics competitor, ZA (b. 1878) |
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thomas j. hefferon politician in Massachusetts, US, US |
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| john a. hefferon American physician (b. 1950) |
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| jim hefferon American mathematician, US (b. 1958) |
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| kathleen hefferon researcher |
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| thomas hefferon Irish film director, IE (b. 1982) |
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| d.c. hefferon |
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