Caio vs Oliver

Baby Name Comparison — 2026

Caio

Boy #3,730 Most Popular 3 Syllables

Meaning

"to rejoice, to be glad"

Origin: Latin

Cultural Roots

Brazilian Portuguese Italian Roman

Quick Stats

Popularity Rank
#3,730
Total SSA Count
30
Syllables
3
Formality
Moderate
Nicknames
Kai, Ca

Playground Safety Score

✓ All Clear
Full profile for Caio →

Popularity Comparison

Caio Rank #3,730
Oliver Rank #3

Oliver is more popular, ranked #3 vs #3730 for Caio.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Caio ___

  • Caio Alexandre
  • Caio Felipe
  • Caio Henrique
  • Caio Lucas
  • Caio Rafael
  • Caio Miguel

Oliver ___

  • Oliver James
  • Oliver Thomas
  • Oliver William
  • Oliver Henry
  • Oliver John
  • Oliver Benjamin

Sibling Name Ideas

Names that pair well as siblings.

If you choose Caio

Enzo Mateus Pedro Giovanna Isadora

If you choose Oliver

Olivia Charlotte Emma Sophia Amelia

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Caio or Oliver more popular?

Oliver is more popular, ranked #3 compared to Caio at #3730 in the United States.

What do Caio and Oliver mean?

Caio means "to rejoice, to be glad" (Latin origin). Oliver means "olive tree" (Latin origin).

Are Caio and Oliver boy or girl names?

Caio is primarily a boy name. Oliver is primarily a boy name.

More Comparisons

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← Full profile: Caio ← Full profile: Oliver Browse all baby names