Killian vs Onyx

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 #359 Most Popular 2 Syllables

"black gemstone"

Origin: Greek (onyx)

American

✓ All Clear

Killian Rank #370

Onyx Rank #359

Onyx is more popular, ranked #359 vs #370 for Killian.

Is Killian or Onyx more popular?

Onyx is more popular, ranked #359 compared to Killian at #370 in the United States.

What do Killian and Onyx mean?

Killian means "associated with the church" (Irish Gaelic origin). Onyx means "black gemstone" (Greek (onyx) origin).

Are Killian and Onyx boy or girl names?

Killian is primarily a boy name. Onyx is primarily a boy name.