39,683births recorded
8Countries
2Variants
1995Peak · Alberta
#1002United States 2025
Brennan is a boy name family recorded 39,683 times in 8 countries since 1916. It ranks highest today in the United States (#1002 in 2025). Its all-time peak was in Alberta in 1995, at 88.3 births per 100,000.
Popularity by country
Births per 100,000 newborns, all forms of the name combined.
Which form wins where
Births per 100,000 newborns for each form, in the selected country.
All forms of Brennan
| Variants | Language | Total births | Country | Latest rank | Peak year | 10-year trend |
|---|---|---|---|---|---|---|
| Brennan | English | 35,487 | 🇺🇸 United States | #1002 | 2009 | ▼ 64 % |
| Brennan | English | 1,460 | 🇨🇦 Ontario | – | 1997 | – |
| Brennan | English | 609 | 🇨🇦 Alberta | – | 1995 | – |
| Brennan | English | 577 | 🇨🇦 British Columbia | – | 1993 | – |
| Brennan | English | 542 | 🏴 England & Wales | #2659 | 2002 | ▼ 25 % |
| Brennan | English | 110 | 🇫🇷 France | – | 2005 | – |
| Brenan | English | 833 | 🇺🇸 United States | – | 2009 | – |
| Brenan | English | 45 | 🇫🇷 France | – | 2005 | – |
How we grouped these names
- Brennan ↔ Brenan — spelling variant
Questions about Brennan
How popular is the name Brennan?
In 2025 it ranked #1002 in the United States. Official registers record 39,683 births across 8 countries.
What is Brennan in other languages?
Brenan (English).
When was Brennan most popular?
It peaked in Alberta in 1995, at 88.3 births per 100,000.
Is Brennan a boy or a girl name?
In official birth registers, Brennan is a boy name.