Keylan vs Casyn

Baby Name Comparison — 2026

Keylan

Boy #4,690 Most Popular 2 Syllables

"slender, narrow"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Boy #4,583 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish Gaelic

American Irish English

✓ All Clear

Keylan Rank #4,690

Casyn Rank #4,583

Casyn is more popular, ranked #4583 vs #4690 for Keylan.

Is Keylan or Casyn more popular?

Casyn is more popular, ranked #4583 compared to Keylan at #4690 in the United States.

What do Keylan and Casyn mean?

Keylan means "slender, narrow" (Irish Gaelic origin). Casyn means "vigilant, watchful" (Irish Gaelic origin).

Are Keylan and Casyn boy or girl names?

Keylan is primarily a boy name. Casyn is primarily a boy name.