Killian vs Simon

Baby Name Comparison — 2026

Killian

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

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Boy #251 Most Popular 2 Syllables

"he has heard, God has heard"

Origin: Hebrew

English French German Scandinavian Jewish

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Killian Rank #370

Simon Rank #251

Simon is more popular, ranked #251 vs #370 for Killian.

Is Killian or Simon more popular?

Simon is more popular, ranked #251 compared to Killian at #370 in the United States.

What do Killian and Simon mean?

Killian means "associated with the church" (Irish Gaelic origin). Simon means "he has heard, God has heard" (Hebrew origin).

Are Killian and Simon boy or girl names?

Killian is primarily a boy name. Simon is primarily a boy name.