Brennan
Brennan is a male given name: 94% of people named Brennan are men, and it is recorded as male in 1 of the 2 countries covered.
- Verdict
- Male
- Male / female split
- 94% male / 6% female
- Confidence
- High (64 or more weighted country observations)
- Most common in
- United States, Great Britain
- US births since 1880
- 31,070 male / 2,036 female
- Data
- nam_dict (GFDL) + US SSA
- Updated
- 2026-09-11
How to address Brennan
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Brennan," in English, "Guten Tag Brennan," in German. Brennan is a male given name: about 94% of people named Brennan are men. A quick look at a profile confirms it for certain.
Ready-made greetings in six languages
English
Dear Brennan,
German
Guten Tag Brennan,
French
Bonjour Brennan,
Spanish
Estimado/a Brennan:
Chinese
Brennan您好：
Japanese
Brennan様
English
Hi Brennan,
German
Hi Brennan,
French
Salut Brennan,
Spanish
Hola Brennan,
Chinese
Brennan你好：
Japanese
Brennanさん
This is a statistical estimate, not a statement about the gender, identity or correct form of address of any particular person.
Country breakdown
| Country | How common | Usually | Male share |
|---|---|---|---|
| United States | common | man's name | 94% |
| Great Britain | rare | man's name | 75% |
United States birth data
31,070 male · 2,036 female · 33,106 births recorded
Since 1980: 94% male.
Frequently asked questions
Is Brennan a male or female name?
Brennan is a male given name: 94% of people named Brennan are men, and it is recorded as male in 1 of the 2 countries covered.
How do I address Brennan in an email?
When you do not know their gender for certain, the full name with no title is the safe choice: "Dear Brennan," in English, "Guten Tag Brennan," in German. Brennan is a male given name: about 94% of people named Brennan are men. A quick look at a profile confirms it for certain.
Is Brennan a unisex name?
Brennan is not a unisex name: 94% of people named Brennan are men. Brennan leans strongly male overall.
Related names
Sources
Gender by country: nam_dict, the c't first-names dictionary by Joerg Michael, roughly 44,000 names across 55 countries, licensed GFDL. US frequencies: United States Social Security Administration baby-name data, public domain. Method: how we classify names. Full dataset: data & licences. Data built 2026-09-11.
DearWho, "Is Brennan a male or female name?", https://dearwho.vercel.app/name/brennan (accessed 2026-09-11). Data: nam_dict (J. Michael, GFDL) and US SSA, built 2026-09-11.
BibTeX
@misc{dearwho_brennan,
title = {Is Brennan a male or female name?},
author = {{DearWho}},
year = {2026},
url = {https://dearwho.vercel.app/name/brennan},
note = {Data: nam_dict (GFDL), US SSA public domain}
}