Lewis vs Killian

Baby Name Comparison — 2026

Lewis

Boy #435 Most Popular 2 Syllables

"famous warrior"

Origin: Germanic via French

English Welsh French American

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Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Lewis Rank #435

Killian Rank #370

Killian is more popular, ranked #370 vs #435 for Lewis.

Is Lewis or Killian more popular?

Killian is more popular, ranked #370 compared to Lewis at #435 in the United States.

What do Lewis and Killian mean?

Lewis means "famous warrior" (Germanic via French origin). Killian means "associated with the church" (Irish Gaelic origin).

Are Lewis and Killian boy or girl names?

Lewis is primarily a boy name. Killian is primarily a boy name.