Declan vs Callister

Baby Name Comparison — 2026

Declan

Boy #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Declan Rank #131

Callister Rank #43,579

Declan is more popular, ranked #131 vs #43579 for Callister.

Is Declan or Callister more popular?

Declan is more popular, ranked #131 compared to Callister at #43579 in the United States.

What do Declan and Callister mean?

Declan means "man of prayer" (Irish Gaelic origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Declan and Callister boy or girl names?

Declan is primarily a boy name. Callister is primarily a boy name.