Reilly vs Callister

Baby Name Comparison — 2026

Reilly

Boy #2,800 Most Popular 2 Syllables

"courageous, valiant"

Origin: Irish Gaelic

Irish Irish-American Scottish Australian

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Reilly Rank #2,800

Callister Rank #43,579

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

Is Reilly or Callister more popular?

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

What do Reilly and Callister mean?

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

Are Reilly and Callister boy or girl names?

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