Cleo vs Casyn

Baby Name Comparison — 2026

Cleo

Boy #4,718 Most Popular 2 Syllables

"short form of Cleopatra"

Origin: Greek

English American European Australian

✓ All Clear

Boy #4,583 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish Gaelic

American Irish English

✓ All Clear

Cleo Rank #4,718

Casyn Rank #4,583

Casyn is more popular, ranked #4583 vs #4718 for Cleo.

Is Cleo or Casyn more popular?

Casyn is more popular, ranked #4583 compared to Cleo at #4718 in the United States.

What do Cleo and Casyn mean?

Cleo means "short form of Cleopatra" (Greek origin). Casyn means "vigilant, watchful" (Irish Gaelic origin).

Are Cleo and Casyn boy or girl names?

Cleo is primarily a boy name. Casyn is primarily a boy name.