Kairo vs Onyx

Baby Name Comparison — 2026

Kairo

Boy #238 Most Popular 2 Syllables

Meaning

"the victorious, the conqueror"

Origin: Arabic place name

Cultural Roots

American African American Arabic

Quick Stats

Popularity Rank
#238
Total SSA Count
1,478
Syllables
2
Formality
Casual
Nicknames
Kai, Kair

Playground Safety Score

✓ All Clear
Full profile for Kairo →

Popularity Comparison

Kairo Rank #238
Onyx Rank #359

Kairo is more popular, ranked #238 vs #359 for Onyx.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kairo ___

  • Kairo James
  • Kairo Xavier
  • Kairo Isaiah
  • Kairo Zion
  • Kairo Elijah
  • Kairo Andre

Onyx ___

  • Onyx James
  • Onyx Cole
  • Onyx Reed
  • Onyx Sage
  • Onyx Atlas
  • Onyx Stone

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kairo

Zion Malakai Kyrie Amara Saniyah

If you choose Onyx

Jade Phoenix Flint Raven Zane

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 Kairo or Onyx more popular?

Kairo is more popular, ranked #238 compared to Onyx at #359 in the United States.

What do Kairo and Onyx mean?

Kairo means "the victorious, the conqueror" (Arabic place name origin). Onyx means "black gemstone" (Greek (onyx) origin).

Are Kairo and Onyx boy or girl names?

Kairo is primarily a boy name. Onyx is primarily a boy name.

More Comparisons

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← Full profile: Kairo ← Full profile: Onyx Browse all baby names