Around the globe, O'Carroll (O'Carroll 
) is an extremely rare masculine first name. Much more frequently, O'Carroll is the last name as well as the forename.
| VARIANT | COUNTRY |
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| O'Carroll | United Kingdom, Australia, Ireland, United States, Canada |
| sir john o'carroll, 3rd bt. (born 1721) (b. 1721) |
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| gay o'carroll Irish footballer, IE (b. 1964) |
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| teige o'carroll, 1st baron of ely Peerage person ID=275118 |
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| redmond peter o'carroll (died 1847) |
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| mulrony mcshane o'carroll Peerage person ID=154913 |
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| giles o'carroll Peerage person ID=33162 |
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| sir john whitley o'carroll, 4th bt. (died 1818) |
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| sir daniel o'carroll, 2nd bt. (died 1758) |
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| teige o'carroll, of ely o'carroll - 1407 |
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| more o'carroll Est 1525 - 1592 |
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| sir jervoise o'carroll, 5th bt. (died 1831) |
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| sir john whitley christopher o'carroll, 6th bt. (died 1835) |
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| min l o'carroll researcher |
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| ross o'carroll Irish hurler and Gaelic football player, IE (b. 1987) |
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