Surname Gillooly (Gillooly 
) , in the world, is a rare last name. The family name Gillooly is habitual in Ireland, where it is quite a rare surname, New Zealand, where it is a rare surname, and the United States. Measured by absolute frequency, this name is the most popular in the United States, the United Kingdom, and Ireland.
| VARIANT | COUNTRY |
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| Gillooly | Australia, New Zealand, Ireland, United Kingdom, United States |
| laurence gillooly Bishop of Elphin (b. 1819) |
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| jane gillooly American filmmaker, US |
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| james f gillooly researcher |
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| daniel j. gillooly actor |
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| zachary d gillooly researcher (ORCID 0000-0002-9517-5879) |
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| andrew r gillooly researcher |
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