Brennan
How to say it: BREN-un · /ˈbrɛnən/
From the Irish surname O Braonain, derived from 'braon' meaning 'raindrop'. A surname turned given name.
Brennan was the 868th most popular boys’ name in the United States in 2025, given to 226 babies (Social Security Administration). Its busiest decade was the 2000s, its births are down about 70% in ten years, and it is projected to slip to #1,138 by 2030.
Updated · SSA 2025 data, published May 2026 · How we compute these figures
Key facts
| Rank among boys’ names, 2025 | #868 |
|---|---|
| Babies born in 2025 | 226 |
| Share of births | 1 in 13,477 |
| Peak decade | 2000s |
| Change over 10 years | −70% |
| Projected rank for 2030 (estimate) | #1,138 |
Sources: Social Security Administration (SSA). How we compute these figures.
Its life, decade by decade
After cresting in the 2000s, Brennan has thinned out considerably. Now far from that high, further softening looks likely in the next few years.
What goes with it
Mellow in sound with a soft center, Brennan feels sturdy and unadorned. Connor pairs easily alongside it.
In the classroom
In a class of 25 children born in 2025, the chance that another child is called Brennan is about under 1 in 200.
Around the world
This spelling is used in English, French, Irish.
Famous people named Brennan
- Brennan Johnson (born 2001)Welsh-English association football player
- Brennan Brown (born 1968)American stage, film, and television actor
- Brennan Heart (born 1982)Dutch DJ and hardstyle producer
From Wikidata and Wikipedia
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