Caio vs Nilo

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 →

Nilo

Boy #3,651 Most Popular 2 Syllables

Meaning

"champion, cloud"

Origin: Old Irish via Finnish

Cultural Roots

Finnish Spanish Italian East African

Quick Stats

Popularity Rank
#3,651
Total SSA Count
31
Syllables
2
Formality
Moderate
Nicknames
Ni

Playground Safety Score

✓ All Clear
Full profile for Nilo →

Popularity Comparison

Caio Rank #3,730
Nilo Rank #3,651

Nilo is more popular, ranked #3651 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

Nilo ___

  • Nilo James
  • Nilo Alexander
  • Nilo River
  • Nilo Kai
  • Nilo Hugo
  • Nilo Felix

Sibling Name Ideas

Names that pair well as siblings.

If you choose Caio

Enzo Mateus Pedro Giovanna Isadora

If you choose Nilo

Milo Nico Leo Theo Zara

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 Nilo more popular?

Nilo is more popular, ranked #3651 compared to Caio at #3730 in the United States.

What do Caio and Nilo mean?

Caio means "to rejoice, to be glad" (Latin origin). Nilo means "champion, cloud" (Old Irish via Finnish origin).

Are Caio and Nilo boy or girl names?

Caio is primarily a boy name. Nilo is primarily a boy name.

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