Sidney vs Ao

Baby Name Comparison — 2026

Sidney

Boy #1,374 Most Popular 2 Syllables

"from Saint Denis"

Origin: Anglo-Norman French

English American Australian

✓ All Clear

Boy #14,516 Most Popular 2 Syllables

"blue, blue-green"

Origin: Japanese

Japanese Chinese Maori

✓ All Clear

Sidney Rank #1,374

Ao Rank #14,516

Sidney is more popular, ranked #1374 vs #14516 for Ao.

Is Sidney or Ao more popular?

Sidney is more popular, ranked #1374 compared to Ao at #14516 in the United States.

What do Sidney and Ao mean?

Sidney means "from Saint Denis" (Anglo-Norman French origin). Ao means "blue, blue-green" (Japanese origin).

Are Sidney and Ao boy or girl names?

Sidney is primarily a boy name. Ao is primarily a boy name.