Callahan vs Killian

Baby Name Comparison — 2026

Callahan

Boy #364 Most Popular 3 Syllables

"lover of churches"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Callahan Rank #364

Killian Rank #370

Callahan is more popular, ranked #364 vs #370 for Killian.

Is Callahan or Killian more popular?

Callahan is more popular, ranked #364 compared to Killian at #370 in the United States.

What do Callahan and Killian mean?

Callahan means "lover of churches" (Irish Gaelic origin). Killian means "associated with the church" (Irish Gaelic origin).

Are Callahan and Killian boy or girl names?

Callahan is primarily a boy name. Killian is primarily a boy name.