Callister vs Declan

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 #131 Most Popular 2 Syllables

"man of prayer"

Origin: Irish Gaelic

Irish English American

✓ All Clear

Callister Rank #43,579

Declan Rank #131

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

Is Callister or Declan more popular?

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

What do Callister and Declan mean?

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

Are Callister and Declan boy or girl names?

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