Onyx vs Rio

Baby Name Comparison — 2026

Popularity Comparison

Onyx Rank #359
Rio Rank #517

Onyx is more popular, ranked #359 vs #517 for Rio.

Frequently Asked Questions

Is Onyx or Rio more popular?

Onyx is more popular, ranked #359 compared to Rio at #517 in the United States.

What do Onyx and Rio mean?

Onyx means "black gemstone" (Greek (onyx) origin). Rio means "river" (Spanish/Portuguese origin).

Are Onyx and Rio boy or girl names?

Onyx is primarily a boy name. Rio is primarily a boy name.

More Comparisons

Rio vs Onyx Onyx vs Kingston Onyx vs Sonny Onyx vs Paxton Onyx vs Zane
← Full profile: Onyx ← Full profile: Rio Browse all baby names