Jay vs Killian

Baby Name Comparison — 2026

Jay

Boy #397 Most Popular 1 Syllable

"to rejoice, joyful"

Origin: Latin (Gaius)

American English South Asian Universal

✓ All Clear

Boy #370 Most Popular 3 Syllables

"associated with the church"

Origin: Irish Gaelic

Irish French American English

✓ All Clear

Jay Rank #397

Killian Rank #370

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

Is Jay or Killian more popular?

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

What do Jay and Killian mean?

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

Are Jay and Killian boy or girl names?

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