Casyn vs Cleo

Baby Name Comparison — 2026

Casyn

Boy #4,583 Most Popular 2 Syllables

"vigilant, watchful"

Origin: Irish Gaelic

American Irish English

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Boy #4,718 Most Popular 2 Syllables

"short form of Cleopatra"

Origin: Greek

English American European Australian

✓ All Clear

Casyn Rank #4,583

Cleo Rank #4,718

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

Is Casyn or Cleo more popular?

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

What do Casyn and Cleo mean?

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

Are Casyn and Cleo boy or girl names?

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