MallowbyNames

Connelly

KON-uh-lee · Of uncertain origin; likely an Anglicized form of Irish Ó Conghaile, meaning 'descendant of Conghal', a personal name of debated meaning, possibly 'hound' or 'valorous'.

2025 rank (girls)
#11,932
Babies named in 2025
7
Peak popularity
2020
2025 frequency
1 in 229,610 girls
Usually for
Girls & boys
Trend
Declining since 2021

Declining since 2021, #11,932 for girls today.

Popularity of Connelly since 1991

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

71522200020102020Most births 2020GirlsBoys
GirlsBoys
Data table (by decade)
DecadeGirlsBoys
1990s524
2000s4438
2010s10643
2020s8217

Meaning & origin

Connelly is a modern American given name adapted from an Irish surname, first recorded in U.S. data in 1991. Its rank of 11,932 in 2023 reflects a 1-in-229,610 usage rate, placing it among rare choices. The name reached its peak rank of 11,932 in 2020, after which it has declined in usage. As a surname, Connelly is rooted in the Irish Ó Conghaile, a clan name associated with County Galway and other regions. The name carries a strong Celtic heritage while fitting contemporary naming trends that favor surname-style first names. Despite its Irish origin, Connelly has no strong association with any specific U.S. state in the data. Its unisex appeal and soft but firm sound make it a distinctive option for parents seeking a name with cultural depth and modern edge.

Connelly is primarily an Anglicized form of the Irish surname Ó Conghaile, meaning 'descendant of Conghal'. The root name Conghal itself is of uncertain meaning, possibly derived from the Old Irish elements 'cú' (hound) or 'con' (warrior) combined with 'gal' (valor). As a given name, Connelly emerged in the late 20th century, often used as a surname-as-first-name reflecting family heritage or a distinctive sound.

Nicknames & variants

Nicknames: Con, Connie, Lee

Variants: Connelly, Conley, Connley

Sibling names for Connelly

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

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

C is for Connelly, our favorite little person.

C is for Connelly…”

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

Make Connelly's book

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

Questions parents ask

What does the name Connelly mean?
Connelly is an Irish surname-turned-first-name, likely meaning 'descendant of Conghal', with Conghal itself possibly meaning 'hound' or 'valorous'.
How popular is Connelly?
In 2023, Connelly ranked 11,932 in the U.S., with approximately 1 in 229,610 newborns given the name. Its peak popularity was in 2020.
Is Connelly a boy or girl name?
Connelly is used for both boys and girls, though it is more common for boys. It has been recorded as unisex since its first appearance in U.S. data in 1991.