Brett vs Duncan

Baby Name Comparison — 2026

Brett

Boy #1,061 Most Popular 1 Syllable

"a Breton, person from Brittany"

Origin: Celtic/Old French

English American Australian

✓ All Clear

Boy #1,104 Most Popular 2 Syllables

"dark warrior"

Origin: Scottish Gaelic

Scottish Irish British American

✓ All Clear

Brett Rank #1,061

Duncan Rank #1,104

Brett is more popular, ranked #1061 vs #1104 for Duncan.

Is Brett or Duncan more popular?

Brett is more popular, ranked #1061 compared to Duncan at #1104 in the United States.

What do Brett and Duncan mean?

Brett means "a Breton, person from Brittany" (Celtic/Old French origin). Duncan means "dark warrior" (Scottish Gaelic origin).

Are Brett and Duncan boy or girl names?

Brett is primarily a boy name. Duncan is primarily a boy name.