Guillermo vs Rey

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 #823 Most Popular 1 Syllable

"king"

Origin: Spanish

Spanish Latin American American

✓ All Clear

Guillermo Rank #833

Rey Rank #823

Rey is more popular, ranked #823 vs #833 for Guillermo.

Is Guillermo or Rey more popular?

Rey is more popular, ranked #823 compared to Guillermo at #833 in the United States.

What do Guillermo and Rey mean?

Guillermo means "resolute protector" (Old High German wil (will) + helm (protection) origin). Rey means "king" (Spanish origin).

Are Guillermo and Rey boy or girl names?

Guillermo is primarily a boy name. Rey is primarily a boy name.