Guillermo vs Oliver

Baby Name Comparison — 2026

Guillermo

Boy #833 Most Popular 3 Syllables

Meaning

"resolute protector"

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

Cultural Roots

Spanish Latin American Filipino Portuguese

Quick Stats

Popularity Rank
#833
Total SSA Count
297
Syllables
3
Formality
Formal
Nicknames
Memo, Guille, Willy

Playground Safety Score

✓ All Clear
Full profile for Guillermo →

Popularity Comparison

Guillermo Rank #833
Oliver Rank #3

Oliver is more popular, ranked #3 vs #833 for Guillermo.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Guillermo ___

  • Guillermo Alejandro
  • Guillermo Antonio
  • Guillermo Eduardo
  • Guillermo Rafael
  • Guillermo Miguel
  • Guillermo Carlos

Oliver ___

  • Oliver James
  • Oliver Thomas
  • Oliver William
  • Oliver Henry
  • Oliver John
  • Oliver Benjamin

Sibling Name Ideas

Names that pair well as siblings.

If you choose Guillermo

Fernando Ricardo Alejandra Lucia Isabella

If you choose Oliver

Olivia Charlotte Emma Sophia Amelia

Which Name Fits Your Family?

Answer 3 quick questions and we'll help you decide.

1. Which style feels more like your family?

Frequently Asked Questions

Is Guillermo or Oliver more popular?

Oliver is more popular, ranked #3 compared to Guillermo at #833 in the United States.

What do Guillermo and Oliver mean?

Guillermo means "resolute protector" (Old High German wil (will) + helm (protection) origin). Oliver means "olive tree" (Latin origin).

Are Guillermo and Oliver boy or girl names?

Guillermo is primarily a boy name. Oliver is primarily a boy name.

More Comparisons

Oliver vs Guillermo Guillermo vs Kellen Guillermo vs Ryland Guillermo vs Ray Guillermo vs Jeremias
← Full profile: Guillermo ← Full profile: Oliver Browse all baby names