Callister vs Cassidy

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 #2,323 Most Popular 3 Syllables

"curly-haired"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Callister Rank #43,579

Cassidy Rank #2,323

Cassidy is more popular, ranked #2323 vs #43579 for Callister.

Is Callister or Cassidy more popular?

Cassidy is more popular, ranked #2323 compared to Callister at #43579 in the United States.

What do Callister and Cassidy mean?

Callister means "defender of men" (Greek via Gaelic origin). Cassidy means "curly-haired" (Irish Gaelic origin).

Are Callister and Cassidy boy or girl names?

Callister is primarily a boy name. Cassidy is primarily a boy name.