Brennan or Brennen

More babies were named Brennan than Brennen in every recorded year.

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Popularity over time

Babies given each name per 1,000 babies of the sex it's most often recorded as, 1880–2025.

Babies per 1,000 (each name's main sex), 1880–2025Popularity of Brennan or Brennen from 1880 to 2025. More babies were named Brennan than Brennen in every recorded year.00.20.40.60.8118801900192019401960198020002020BrennanBrennen Babies per 1,000 (each name's main sex), 1880–2025Popularity of Brennan or Brennen from 1880 to 2025. More babies were named Brennan than Brennen in every recorded year.00.20.40.60.811880192019602000BrennanBrennen
BrennanBrennen
Rank in 2025#1,002 (boys)#4,857 (boys)
TrendFallingFalling
Peak year20092009
Top state—