Caius vs Rian

Baby Name Comparison — 2026

Caius

Boy #1,063 Most Popular 2 Syllables

"to rejoice, joyful"

Origin: Latin

Roman British European American

✓ All Clear

Boy #1,263 Most Popular 2 Syllables

"little king"

Origin: Irish Gaelic

Irish Celtic British

✓ All Clear

Caius Rank #1,063

Rian Rank #1,263

Caius is more popular, ranked #1063 vs #1263 for Rian.

Is Caius or Rian more popular?

Caius is more popular, ranked #1063 compared to Rian at #1263 in the United States.

What do Caius and Rian mean?

Caius means "to rejoice, joyful" (Latin origin). Rian means "little king" (Irish Gaelic origin).

Are Caius and Rian boy or girl names?

Caius is primarily a boy name. Rian is primarily a boy name.