Callister vs Brett

Baby Name Comparison — 2026

Callister

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Boy #1,061 Most Popular 1 Syllable

"a Breton, person from Brittany"

Origin: Celtic/Old French

English American Australian

✓ All Clear

Callister Rank #43,579

Brett Rank #1,061

Brett is more popular, ranked #1061 vs #43579 for Callister.

Is Callister or Brett more popular?

Brett is more popular, ranked #1061 compared to Callister at #43579 in the United States.

What do Callister and Brett mean?

Callister means "defender of men" (Greek via Gaelic origin). Brett means "a Breton, person from Brittany" (Celtic/Old French origin).

Are Callister and Brett boy or girl names?

Callister is primarily a boy name. Brett is primarily a boy name.