Casyn vs Kaylan

Baby Name Comparison — 2026

Casyn

Boy #4,583 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish Gaelic

American Irish English

✓ All Clear

Boy #4,545 Most Popular 2 Syllables

"slender, narrow one"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Casyn Rank #4,583

Kaylan Rank #4,545

Kaylan is more popular, ranked #4545 vs #4583 for Casyn.

Is Casyn or Kaylan more popular?

Kaylan is more popular, ranked #4545 compared to Casyn at #4583 in the United States.

What do Casyn and Kaylan mean?

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

Are Casyn and Kaylan boy or girl names?

Casyn is primarily a boy name. Kaylan is primarily a boy name.