Billy vs Ao

Baby Name Comparison — 2026

Billy

Boy #1,051 Most Popular 2 Syllables

"resolute protector"

Origin: Old German via Norman French

English American Australian Irish

✓ All Clear

Boy #14,516 Most Popular 2 Syllables

"blue, blue-green"

Origin: Japanese

Japanese Chinese Maori

✓ All Clear

Billy Rank #1,051

Ao Rank #14,516

Billy is more popular, ranked #1051 vs #14516 for Ao.

Is Billy or Ao more popular?

Billy is more popular, ranked #1051 compared to Ao at #14516 in the United States.

What do Billy and Ao mean?

Billy means "resolute protector" (Old German via Norman French origin). Ao means "blue, blue-green" (Japanese origin).

Are Billy and Ao boy or girl names?

Billy is primarily a boy name. Ao is primarily a boy name.