Ao vs Cassius

Baby Name Comparison — 2026

Ao

Boy #14,516 Most Popular 2 Syllables

"blue, blue-green"

Origin: Japanese

Japanese Chinese Maori

✓ All Clear

Boy #568 Most Popular 3 Syllables

"hollow, empty"

Origin: Latin

English American Roman

✓ All Clear

Ao Rank #14,516

Cassius Rank #568

Cassius is more popular, ranked #568 vs #14516 for Ao.

Is Ao or Cassius more popular?

Cassius is more popular, ranked #568 compared to Ao at #14516 in the United States.

What do Ao and Cassius mean?

Ao means "blue, blue-green" (Japanese origin). Cassius means "hollow, empty" (Latin origin).

Are Ao and Cassius boy or girl names?

Ao is primarily a boy name. Cassius is primarily a boy name.