Last name Heneghan (Heneghan 
) , worldwide, is quite a rare family name. The family name Heneghan is habitual in Ireland, where it is quite a common surname, Bermuda, and the United Kingdom, where it is quite a rare surname. In absolute terms, the name is most common in the United States, Ireland, and the United Kingdom.
| VARIANT | COUNTRY |
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| Heneghan | Canada, Australia, United States, United Kingdom, Ireland |
| john heneghan IE (b. 1882) |
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jack heneghan American football player from the United States, US (b. 1966) |
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| john joseph heneghan (b. 1909) |
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| james heneghan author, CA (b. 1930) |
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| tom heneghan architect, GB (b. 1951) |
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| margaret heneghan Irish barrister, judge 2010–2017 (b. 1959) |
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| carl heneghan researcher, editor, Centre for Evidence-Based Medicine, University of Oxford, BMJ Evidence-Based Medicine, GB (b. 1968) |
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| roisin heneghan Irish architect, IE |
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| julia a heneghan researcher |
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| kate heneghan candidate in United Kingdom General Election |
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| mallorie b heneghan researcher |
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| patricia heneghan actress |
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| michael heneghan American film director, screenwriter and animator, US |
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| helen m heneghan researcher |
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| elizabeth heneghan Canadian judge, CA |
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