Guillermo vs Ao

Baby Name Comparison — 2026

Guillermo

Boy #833 Most Popular 3 Syllables

"resolute protector"

Origin: Old High German wil (will) + helm (protection)

Spanish Latin American Filipino Portuguese

✓ All Clear

Boy #14,516 Most Popular 2 Syllables

"blue, blue-green"

Origin: Japanese

Japanese Chinese Maori

✓ All Clear

Guillermo Rank #833

Ao Rank #14,516

Guillermo is more popular, ranked #833 vs #14516 for Ao.

Is Guillermo or Ao more popular?

Guillermo is more popular, ranked #833 compared to Ao at #14516 in the United States.

What do Guillermo and Ao mean?

Guillermo means "resolute protector" (Old High German wil (will) + helm (protection) origin). Ao means "blue, blue-green" (Japanese origin).

Are Guillermo and Ao boy or girl names?

Guillermo is primarily a boy name. Ao is primarily a boy name.