Reilly
- Gender
- Boy
- Say it
- RY-lee
- Origin
- Irish
- UK rank, 2025
- #3,747 for boys
- US rank, 2025
- #2,822 for girls
Reilly is a boys' name of Irish origin. In 2025 it ranked 3,747th for boys in the UK (5 babies) and 2,822nd for girls in the US (60 babies).
What does Reilly mean?
Irish: from the surname Ó Raghallaigh
From the Irish surname Ó Raghallaigh, borne by the medieval lords of East Breifne in what is now County Cavan.
More on Wiktionary.
Is Reilly a girl's or a boy's name?
Reilly is a boys' name. In 2025, it was given to 3 girls and 5 boys in the UK and 60 girls and 48 boys in the US.
How popular is Reilly in the UK?
- Rank in 2025
- 3,747th among boys
- Babies in 2025
- 5 about 1 in 60,000 boys
- Five-year trend
- Falling down 39% in five years
- Same name in a class
- under 1% chance among 15 boys
In 2025, 5 boys in the UK were named Reilly, making it the 3,747th most popular name for boys. Five years earlier, in 2020, it was 1,657th. Its busiest year was 2012, with 85 boys. 3 girls were also named Reilly in 2025 (5,990th for girls).
2025 had fewer boys named Reilly than any year since 1997.
Half of all the boys named Reilly in the UK since 1996 were born between 2006 and 2014, the years shaded on the chart below.
In 2025, 763 boys in the UK were given Reilly or a name that sounds the same. With every name's spellings counted this way, that ranks #84, up from #3,747 for this spelling alone.
In 2023, 6% of the babies named Reilly in the UK were girls.
Among boys in 2025, it was 3,656th in England and Wales.
Reilly in the UK, year by year
| Year | Boys | Rank |
|---|---|---|
| 2025 | 5 | #3,747 |
| 2024 | 10 | #2,328 |
| 2023 | 15 | #1,715 |
| 2022 | 7 | #2,922 |
| 2021 | 11 | #2,100 |
| 2020 | 15 | #1,657 |
| 2019 | 13 | #1,858 |
| 2018 | 21 | #1,327 |
| 2017 | 28 | #1,115 |
| 2016 | 31 | #1,030 |
| 2015 | 36 | #924 |
| 2014 | 42 | #817 |
| 2013 | 56 | #664 |
| 2012 | 85 | #498 |
| 2011 | 65 | #587 |
| 2010 | 56 | #646 |
| 2009 | 61 | #597 |
| 2008 | 71 | #539 |
| 2007 | 43 | #731 |
| 2006 | 53 | #605 |
| 2005 | 46 | #632 |
| 2004 | 36 | #724 |
| 2003 | 32 | #737 |
| 2002 | 16 | #1,109 |
| 2001 | 18 | #978 |
| 2000 | 9 | #1,503 |
| 1999 | 7 | #1,749 |
| 1998 | 8 | #1,569 |
| 1997 | 3 | #2,979 |
| 1996 | 4 | #2,442 |
How popular is Reilly in the US?
- Rank in 2025
- 2,822nd among girls
- Babies in 2025
- 60 about 1 in 27,000 girls
- Five-year trend
- Falling down 26% in five years
- Same name in a class
- under 1% chance among 15 girls
In 2025, 60 girls in the US were named Reilly, making it the 2,822nd most popular name for girls. Five years earlier, in 2020, it was 2,216th. Its busiest year was 1998, with 379 girls. It first appears in the records in 1978. 48 boys were also named Reilly in 2025 (2,676th for boys).
Half of all the girls named Reilly in the US since 1880 were born between 1998 and 2009, the years shaded on the chart below.
In 2025, 8,469 girls in the US were given Reilly or a name that sounds the same. With every name's spellings counted this way, that ranks #13, up from #2,822 for this spelling alone.
Girls were 15% of the babies named Reilly in the US in 1985, and 56% in 2025.
Reilly in the US, year by year
| Year | Girls | Rank |
|---|---|---|
| 2025 | 60 | #2,822 |
| 2024 | 64 | #2,694 |
| 2023 | 50 | #3,225 |
| 2022 | 65 | #2,661 |
| 2021 | 65 | #2,638 |
| 2020 | 81 | #2,216 |
| 2019 | 81 | #2,249 |
| 2018 | 72 | #2,457 |
| 2017 | 75 | #2,401 |
| 2016 | 99 | #1,996 |
| 2015 | 90 | #2,123 |
| 2014 | 89 | #2,139 |
| 2013 | 103 | #1,929 |
| 2012 | 108 | #1,859 |
| 2011 | 140 | #1,564 |
| 2010 | 139 | #1,574 |
| 2009 | 163 | #1,432 |
| 2008 | 193 | #1,286 |
| 2007 | 199 | #1,244 |
| 2006 | 178 | #1,314 |
| 2005 | 241 | #1,011 |
| 2004 | 268 | #903 |
| 2003 | 276 | #869 |
| 2002 | 305 | #775 |
| 2001 | 325 | #737 |
| 2000 | 289 | #795 |
| 1999 | 324 | #695 |
| 1998 | 379 | #623 |
| 1997 | 360 | #622 |
| 1996 | 173 | #1,069 |
| 1995 | 84 | #1,726 |
| 1994 | 78 | #1,822 |
| 1993 | 69 | #2,007 |
| 1992 | 39 | #2,969 |
| 1991 | 38 | #2,983 |
| 1990 | 52 | #2,369 |
| 1989 | 21 | #4,352 |
| 1988 | 14 | #5,593 |
| 1987 | 17 | #4,656 |
| 1986 | 16 | #4,721 |
| 1985 | 7 | #8,315 |
| 1984 | 5 | #10,417 |
| 1983 | 7 | #8,045 |
| 1982 | 8 | #7,467 |
| 1981 | 5 | #10,409 |
| 1980 | 8 | #7,417 |
| 1979 | 0 | – |
| 1978 | 6 | #8,560 |
Names like Reilly
Names given in the same years and the same naming tradition, with a similar sound.
Brody, Aiden, Finn, Kody, Cody, Kian, Ronan, Kayden, Rowan, Caelan, Declan, Keegan
Other spellings of Reilly
Riley, Ryley, Rylee, Rylie, Ryleigh, Rhylee, Rylei, Rhyleigh, Rileigh, Rilee, Rhiley
Names related to Reilly
More Irish names
Oscar, Rory, Maeve, Ryan, Nolan, Quinn, Orla, Erin, Connor, Casey, Kennedy, Callan, Lennon, Cillian, Kevin, Sloane
Sources
Figures from Baby names in England and Wales (Office for National Statistics), Babies' first names (National Records of Scotland), Baby names (Northern Ireland Statistics and Research Agency) and Popular Baby Names (US Social Security Administration). Nameling last updated them on 20 October 2026. How the figures are worked out, and the data to download.
To cite this page: Nameling, “Reilly: name meaning, origin and popularity”, https://www.nameling.co.uk/names/reilly, updated 20 October 2026.