MallowbyNames

Reilley

RY-lee · Irish surname meaning 'descendant of Raghallach' or possibly 'courageous'.

Peak popularity
2004
Usually for
Girls & boys
Trend
Holding steady

Holding steady.

Popularity of Reilley since 1996

Babies named Reilley per year in U.S. Social Security records.

61117200020102020Most births 2004GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1990s4814
2000s11369
2010s1924
2020s00

Meaning & origin

Reilley is an anglicized spelling of the Irish surname Riley, given to both boys and girls since the late 20th century. First recorded in 1996, the name reached its peak popularity in 2004. Its trajectory has been stable, with sporadic use across the United States. While it has never cracked the top 1000, Reilley remains a recognizable alternative to the more common Riley.

Reilley is a variant spelling of Riley, which originated as an Irish surname from Ó Raghallaigh, meaning 'descendant of Raghallach'. The personal name Raghallach is of uncertain origin but may derive from elements meaning 'race' or 'valiant'. The surname was brought to England and later became used as a given name in the United States from the late 20th century onward. The spelling Reilley is less common than Riley but has appeared since the 1990s.

Nicknames & variants

Nicknames: Rye, Lee

Variants: Riley, Reilly, Rylee, Ryleigh

Sibling names for Reilley

Names that share Reilley's style, for a brother or sister.

A parent animal hugging its little one, the personalized name page

R is for Reilley, our favorite little person.

R is for Reilley…”

In a Mallowby alphabet book, Reilley's letter becomes Reilley's page: hand-illustrated, printed hardcover or paperback, made just for them.

Make Reilley's book

Books for siblings or grandkids? The second book is 15% off.

Questions parents ask

What does the name Reilley mean?
Reilley is an Irish surname meaning 'descendant of Raghallach', possibly meaning 'courageous'.
How popular is the name Reilley?
Reilley has not ranked in the top 1000 U.S. births. It peaked in 2004 with a limited number of uses and has remained relatively stable.
Is Reilley a boy or girl name?
Reilley is unisex but more commonly used for girls in recent decades.