Caio vs Callister

Baby Name Comparison — 2026

Caio

Boy #3,730 Most Popular 3 Syllables

"to rejoice, to be glad"

Origin: Latin

Brazilian Portuguese Italian Roman

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Caio Rank #3,730

Callister Rank #43,579

Caio is more popular, ranked #3730 vs #43579 for Callister.

Is Caio or Callister more popular?

Caio is more popular, ranked #3730 compared to Callister at #43579 in the United States.

What do Caio and Callister mean?

Caio means "to rejoice, to be glad" (Latin origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Caio and Callister boy or girl names?

Caio is primarily a boy name. Callister is primarily a boy name.