Foster vs Brennan

Baby Name Comparison — 2026

Foster

Boy #1,077 Most Popular 2 Syllables

"forest keeper, forester"

Origin: Old English

English American

✓ All Clear

Boy #1,058 Most Popular 2 Syllables

"descendant of Braonán, tearful one"

Origin: Irish Gaelic

Irish American Scottish

✓ All Clear

Foster Rank #1,077

Brennan Rank #1,058

Brennan is more popular, ranked #1058 vs #1077 for Foster.

Is Foster or Brennan more popular?

Brennan is more popular, ranked #1058 compared to Foster at #1077 in the United States.

What do Foster and Brennan mean?

Foster means "forest keeper, forester" (Old English origin). Brennan means "descendant of Braonán, tearful one" (Irish Gaelic origin).

Are Foster and Brennan boy or girl names?

Foster is primarily a boy name. Brennan is primarily a boy name.