Rey vs Guillermo

Baby Name Comparison — 2026

Rey

Boy #823 Most Popular 1 Syllable

"king"

Origin: Spanish

Spanish Latin American American

✓ All Clear

Boy #833 Most Popular 3 Syllables

"resolute protector"

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

Spanish Latin American Filipino Portuguese

✓ All Clear

Rey Rank #823

Guillermo Rank #833

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

Is Rey or Guillermo more popular?

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

What do Rey and Guillermo mean?

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

Are Rey and Guillermo boy or girl names?

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