Callister vs Sidney

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 #1,374 Most Popular 2 Syllables

"from Saint Denis"

Origin: Anglo-Norman French

English American Australian

✓ All Clear

Callister Rank #43,579

Sidney Rank #1,374

Sidney is more popular, ranked #1374 vs #43579 for Callister.

Is Callister or Sidney more popular?

Sidney is more popular, ranked #1374 compared to Callister at #43579 in the United States.

What do Callister and Sidney mean?

Callister means "defender of men" (Greek via Gaelic origin). Sidney means "from Saint Denis" (Anglo-Norman French origin).

Are Callister and Sidney boy or girl names?

Callister is primarily a boy name. Sidney is primarily a boy name.