Ostin vs Casyn

Baby Name Comparison — 2026

Ostin

Boy #4,457 Most Popular 2 Syllables

"great, venerable"

Origin: Latin Augustinus

American English Irish

✓ All Clear

Boy #4,583 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish Gaelic

American Irish English

✓ All Clear

Ostin Rank #4,457

Casyn Rank #4,583

Ostin is more popular, ranked #4457 vs #4583 for Casyn.

Is Ostin or Casyn more popular?

Ostin is more popular, ranked #4457 compared to Casyn at #4583 in the United States.

What do Ostin and Casyn mean?

Ostin means "great, venerable" (Latin Augustinus origin). Casyn means "vigilant, watchful" (Irish Gaelic origin).

Are Ostin and Casyn boy or girl names?

Ostin is primarily a boy name. Casyn is primarily a boy name.