Dax vs Rio

Baby Name Comparison — 2026

Dax

Boy #640 Most Popular 1 Syllable

"water, thermal waters (place name)"

Origin: French/Basque

English American French

✓ All Clear

Boy #517 Most Popular 2 Syllables

"river"

Origin: Spanish/Portuguese

Spanish Portuguese Brazilian American

✓ All Clear

Dax Rank #640

Rio Rank #517

Rio is more popular, ranked #517 vs #640 for Dax.

Is Dax or Rio more popular?

Rio is more popular, ranked #517 compared to Dax at #640 in the United States.

What do Dax and Rio mean?

Dax means "water, thermal waters (place name)" (French/Basque origin). Rio means "river" (Spanish/Portuguese origin).

Are Dax and Rio boy or girl names?

Dax is primarily a boy name. Rio is primarily a boy name.