Onyx vs Cairo

Baby Name Comparison — 2026

Onyx

Boy #359 Most Popular 2 Syllables

"black gemstone"

Origin: Greek (onyx)

American

✓ All Clear

Boy #356 Most Popular 2 Syllables

"the victorious (Arabic city name)"

Origin: Arabic (Al-Qahira)

American

✓ All Clear

Onyx Rank #359

Cairo Rank #356

Cairo is more popular, ranked #356 vs #359 for Onyx.

Is Onyx or Cairo more popular?

Cairo is more popular, ranked #356 compared to Onyx at #359 in the United States.

What do Onyx and Cairo mean?

Onyx means "black gemstone" (Greek (onyx) origin). Cairo means "the victorious (Arabic city name)" (Arabic (Al-Qahira) origin).

Are Onyx and Cairo boy or girl names?

Onyx is primarily a boy name. Cairo is primarily a boy name.