Killian vs Knox

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 #209 Most Popular 1 Syllable

"round hill"

Origin: Old English/Scottish

American Scottish English

✓ All Clear

Killian Rank #370

Knox Rank #209

Knox is more popular, ranked #209 vs #370 for Killian.

Is Killian or Knox more popular?

Knox is more popular, ranked #209 compared to Killian at #370 in the United States.

What do Killian and Knox mean?

Killian means "associated with the church" (Irish Gaelic origin). Knox means "round hill" (Old English/Scottish origin).

Are Killian and Knox boy or girl names?

Killian is primarily a boy name. Knox is primarily a boy name.