Brett vs Billy

Baby Name Comparison — 2026

Brett

Boy #1,061 Most Popular 1 Syllable

"a Breton, person from Brittany"

Origin: Celtic/Old French

English American Australian

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Boy #1,051 Most Popular 2 Syllables

"resolute protector"

Origin: Old German via Norman French

English American Australian Irish

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Brett Rank #1,061

Billy Rank #1,051

Billy is more popular, ranked #1051 vs #1061 for Brett.

Is Brett or Billy more popular?

Billy is more popular, ranked #1051 compared to Brett at #1061 in the United States.

What do Brett and Billy mean?

Brett means "a Breton, person from Brittany" (Celtic/Old French origin). Billy means "resolute protector" (Old German via Norman French origin).

Are Brett and Billy boy or girl names?

Brett is primarily a boy name. Billy is primarily a boy name.