Killian vs Frederick

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 #424 Most Popular 3 Syllables

"peaceful ruler"

Origin: Germanic

English German Scandinavian French American

8 High Risk

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Killian Rank #370

Frederick Rank #424

Killian is more popular, ranked #370 vs #424 for Frederick.

Is Killian or Frederick more popular?

Killian is more popular, ranked #370 compared to Frederick at #424 in the United States.

What do Killian and Frederick mean?

Killian means "associated with the church" (Irish Gaelic origin). Frederick means "peaceful ruler" (Germanic origin).

Are Killian and Frederick boy or girl names?

Killian is primarily a boy name. Frederick is primarily a boy name.