Casyn vs Shae

Baby Name Comparison — 2026

Casyn

Boy #4,583 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish Gaelic

American Irish English

✓ All Clear

Boy #4,511 Most Popular 1 Syllable

"admirable, fine, fortunate"

Origin: Old Irish Gaelic

Irish American Australian English

✓ All Clear

Casyn Rank #4,583

Shae Rank #4,511

Shae is more popular, ranked #4511 vs #4583 for Casyn.

Is Casyn or Shae more popular?

Shae is more popular, ranked #4511 compared to Casyn at #4583 in the United States.

What do Casyn and Shae mean?

Casyn means "vigilant, watchful" (Irish Gaelic origin). Shae means "admirable, fine, fortunate" (Old Irish Gaelic origin).

Are Casyn and Shae boy or girl names?

Casyn is primarily a boy name. Shae is primarily a boy name.