Caio vs Dio

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
Dio Rank #3,613

Dio is more popular, ranked #3613 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

Dio ___

  • Dio Matteo
  • Dio Luca
  • Dio Marco
  • Dio James
  • Dio Giovanni
  • Dio Enzo

Sibling Name Ideas

Names that pair well as siblings.

If you choose Caio

Enzo Mateus Pedro Giovanna Isadora

If you choose Dio

Enzo Leo Nico Aria Sofia

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 Dio more popular?

Dio is more popular, ranked #3613 compared to Caio at #3730 in the United States.

What do Caio and Dio mean?

Caio means "to rejoice, to be glad" (Latin origin). Dio means "God, divine" (Italian/Latin origin).

Are Caio and Dio boy or girl names?

Caio is primarily a boy name. Dio is primarily a boy name.

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