Cleo vs Callister

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 #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Cleo Rank #4,718

Callister Rank #43,579

Cleo is more popular, ranked #4718 vs #43579 for Callister.

Is Cleo or Callister more popular?

Cleo is more popular, ranked #4718 compared to Callister at #43579 in the United States.

What do Cleo and Callister mean?

Cleo means "short form of Cleopatra" (Greek origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Cleo and Callister boy or girl names?

Cleo is primarily a boy name. Callister is primarily a boy name.