Callister vs Reilly

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 #2,800 Most Popular 2 Syllables

"courageous, valiant"

Origin: Irish Gaelic

Irish Irish-American Scottish Australian

✓ All Clear

Callister Rank #43,579

Reilly Rank #2,800

Reilly is more popular, ranked #2800 vs #43579 for Callister.

Is Callister or Reilly more popular?

Reilly is more popular, ranked #2800 compared to Callister at #43579 in the United States.

What do Callister and Reilly mean?

Callister means "defender of men" (Greek via Gaelic origin). Reilly means "courageous, valiant" (Irish Gaelic origin).

Are Callister and Reilly boy or girl names?

Callister is primarily a boy name. Reilly is primarily a boy name.