Killian vs Derek

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 #258 Most Popular 2 Syllables

"ruler of the people"

Origin: Germanic

English American Dutch German

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Killian Rank #370

Derek Rank #258

Derek is more popular, ranked #258 vs #370 for Killian.

Is Killian or Derek more popular?

Derek is more popular, ranked #258 compared to Killian at #370 in the United States.

What do Killian and Derek mean?

Killian means "associated with the church" (Irish Gaelic origin). Derek means "ruler of the people" (Germanic origin).

Are Killian and Derek boy or girl names?

Killian is primarily a boy name. Derek is primarily a boy name.