The first name Reilly
A unisex name meaning “descendants of raghallach”.
Pronounced /ˈɹaɪli/ 2 syllables Unisex Also a surname
Meaning and origin
Reilly means “descendants of raghallach”.
From Irish Ó Raghallaigh, a surname meaning "descendants of Raghallach".
From Wiktionary (CC BY-SA 4.0).
Popularity
Babies registered in England and Wales, 1996–2025
In 2025, 5 boys were named Reilly, making it the 3,684th most popular boys’ name. It peaked in 2012, with 63 births (#569).
Office for National Statistics; years with fewer than three births are not published and show as zero. Compare Reilly with other names.
Popularity in the United States
Babies named Reilly at birth, 1880–2025
In 2025, 60 girls born in the United States were named Reilly, the 2,855th most popular girls’ name that year. It was used most in 1998, when 379 were.
US Social Security Administration, from applications for a Social Security card. A name is only published for a year when at least five babies were given it, so quieter years show as zero.
Famous people named Reilly
3 on Wikidata, most written-about first
- Edward Reilly Stettinius, Jr.American diplomat, ran Lend Lease (1900-1949)
- Reilly OpelkaAmerican tennis player (born 1997)
- Reilly SmithCanadian ice hockey player, born 1991
Questions
- What does the name Reilly mean?
- Reilly means “descendants of raghallach”.
- How popular is the name Reilly?
- In 2025, 5 boys born in England and Wales were named Reilly, ranking 3,684th. Its peak was 2012, with 63 births.
- Is Reilly a boy's or a girl's name?
- Both. Of the 10,088 US babies named Reilly since 1880, 55% were girls and 45% boys.
- When was Reilly most popular?
- 1998 in the United States, when 379 babies were named Reilly, its highest rank at 623rd.
- How do you pronounce Reilly?
- Reilly is /ˈɹaɪli/, 2 syllables.
- Is Reilly also a surname?
- Yes. Reilly is used as a surname as well as a first name; its surname page has the origin and how many people carry it.