Aidan vs Killian

Baby Name Comparison — 2026

Aidan

Boy #312 Most Popular 2 Syllables

Irish Scottish English American

✓ All Clear

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Aidan Rank #312

Killian Rank #370

Aidan is more popular, ranked #312 vs #370 for Killian.

Is Aidan or Killian more popular?

Aidan is more popular, ranked #312 compared to Killian at #370 in the United States.

What do Aidan and Killian mean?

Killian means "associated with the church" (Irish Gaelic origin).

Are Aidan and Killian boy or girl names?

Aidan is primarily a boy name. Killian is primarily a boy name.