Killian vs Jay

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 #397 Most Popular 1 Syllable

"to rejoice, joyful"

Origin: Latin (Gaius)

American English South Asian Universal

✓ All Clear

Killian Rank #370

Jay Rank #397

Killian is more popular, ranked #370 vs #397 for Jay.

Is Killian or Jay more popular?

Killian is more popular, ranked #370 compared to Jay at #397 in the United States.

What do Killian and Jay mean?

Killian means "associated with the church" (Irish Gaelic origin). Jay means "to rejoice, joyful" (Latin (Gaius) origin).

Are Killian and Jay boy or girl names?

Killian is primarily a boy name. Jay is primarily a boy name.