Knox vs Killian

Baby Name Comparison — 2026

Knox

Boy #209 Most Popular 1 Syllable

"round hill"

Origin: Old English/Scottish

American Scottish English

✓ All Clear

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Knox Rank #209

Killian Rank #370

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

Is Knox or Killian more popular?

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

What do Knox and Killian mean?

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

Are Knox and Killian boy or girl names?

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