Killian vs Atreus

Baby Name Comparison — 2026

Killian

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Boy #495 Most Popular 3 Syllables

"fearless, not cowardly"

Origin: Greek

American Greek

✓ All Clear

Killian Rank #370

Atreus Rank #495

Killian is more popular, ranked #370 vs #495 for Atreus.

Is Killian or Atreus more popular?

Killian is more popular, ranked #370 compared to Atreus at #495 in the United States.

What do Killian and Atreus mean?

Killian means "associated with the church" (Irish Gaelic origin). Atreus means "fearless, not cowardly" (Greek origin).

Are Killian and Atreus boy or girl names?

Killian is primarily a boy name. Atreus is primarily a boy name.