The baby name Reilly is a Unisex name , 2 syllables long and is pronounced /ˈraɪli/ (RYE-lee).
Reilly is Irish in Origin.
The baby name Reilly is a Unisex name , 2 syllables long and is pronounced /ˈraɪli/ (RYE-lee).
Reilly is Irish in Origin.
Reilly is an Anglicized Irish surname turned given name, from Ó Raghallaigh, "descendant of Raghallach." Raghallach is an early medieval personal name of debated etymology; scholars often associate it with notions of zeal or valour (sometimes linked to Old Irish rág, "impetuosity"). The O'Reillys were powerful Gaelic lords of East Bréifne (County Cavan), prominent from the 13th to 16th centuries, which cemented the surname's visibility. As a personal name, Reilly gained traction in the late 20th century in the wider Anglophone world, pronounced RYE-lee and used for all genders.
Spelling variants and cognates include O'Reilly, Reilley, Reily, and the overlapping Riley/Ryley/Rylee/Rylie forms. Because Riley also derives from an English toponym meaning "rye clearing" (from Old English ryge + leah), modern bearers of Reilly may reference either the Irish patronymic heritage or the English locative sense; many choose it to honor Irish roots while enjoying a modern, lively sound.
Based on birth registration data from national statistics agencies.
| Country | Gender | Year | Rank | Born | of |
|---|---|---|---|---|---|
| Ireland | Boys | 2023 | #1 | — | 807 |
| AO | Boys | 0 | #249 | 1 | 5,568 |
| NA | Boys | 0 | #253 | 1 | 6,830 |
| Canada | Girls | 2024 | #281 | 5 | 2,795 |
| Canada | Boys | 2024 | #296 | 11 | 2,588 |
| PE | 0 | #329 | 1 | 6,350 | |
| GT | 0 | #338 | 1 | 5,948 | |
| QA | Girls | 0 | #343 | 1 | 15,378 |
| CN | Girls | 0 | #359 | 1 | 8,829 |
| ZA | 0 | #473 | 2 | 14,421 | |
| CR | Boys | 0 | #510 | 1 | 10,188 |
| PA | Girls | 0 | #518 | 1 | 9,861 |
| RU | Boys | 0 | #526 | 1 | 12,621 |
| HK | Boys | 0 | #557 | 1 | 12,905 |
| CR | Girls | 0 | #569 | 5 | 11,342 |
| SG | Girls | 0 | #632 | 1 | 18,916 |
| SG | Boys | 0 | #737 | 3 | 17,960 |
| BR | Boys | 0 | #785 | 1 | 12,213 |
| KW | Boys | 0 | #806 | 1 | 18,755 |
| NG | Girls | 0 | #826 | 1 | 15,093 |
| United States | Boys | 2024 | #847 | 46 | 7,044 |
| United States | Girls | 2024 | #854 | 63 | 8,487 |
| PE | Boys | 0 | #867 | 12 | 14,506 |
| NL | Boys | 0 | #938 | 14 | 5,873 |
| CO | Boys | 0 | #980 | 2 | 15,656 |
| NG | Boys | 0 | #1,001 | 1 | 16,906 |
| EG | Girls | 0 | #1,009 | 1 | 14,742 |
| SA | Girls | 0 | #1,014 | 1 | 25,931 |
| MX | Boys | 0 | #1,027 | 7 | 16,355 |
| CO | Girls | 0 | #1,152 | 1 | 16,140 |
| ZA | Girls | 0 | #1,236 | 1 | 25,928 |
| MX | Girls | 0 | #1,266 | 2 | 17,781 |
| ZA | Boys | 0 | #1,266 | 7 | 25,619 |
Reilly is popular in 22 countries — most recent births per country:
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