Boy Name · Irish Origin
Brennan
Last reviewed: June 2026
Considering Brennan? It is a boy name whose meaning is "Descendant of the sorrowful one", rooted in Irish naming tradition, and ranks in our Rare popularity tier. Phonetically it shares territory with Brendan.
Names like Brennan
Frequently asked about Brennan
What does the name Brennan mean?
Brennan means "Descendant of the sorrowful one" and is of Irish origin.
What is the origin of Brennan?
Brennan originates in Irish naming tradition.
How do you pronounce Brennan?
Brennan has 7 letters and is most commonly stressed on the first syllable.
Is Brennan a boy's or girl's name?
Brennan is primarily used as a boy's name in US records.
How popular is Brennan in 2026?
In our 2026 popularity tracker, Brennan sits in the Rare tier — an uncommon, standout choice.
What names are similar to Brennan?
Names that share Brennan's sound and style include Brendan, Brennen, Brandan, Brannon, Brennon.