Caio vs Gaius

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 #3,655 Most Popular 2 Syllables

"to rejoice, happy, glad"

Origin: Latin

Roman Latin English American

✓ All Clear

Caio Rank #3,730

Gaius Rank #3,655

Gaius is more popular, ranked #3655 vs #3730 for Caio.

Is Caio or Gaius more popular?

Gaius is more popular, ranked #3655 compared to Caio at #3730 in the United States.

What do Caio and Gaius mean?

Caio means "to rejoice, to be glad" (Latin origin). Gaius means "to rejoice, happy, glad" (Latin origin).

Are Caio and Gaius boy or girl names?

Caio is primarily a boy name. Gaius is primarily a boy name.