Guillermo vs Liam

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 →

Liam

Boy #1 Most Popular 2 Syllables

Meaning

"strong-willed warrior"

Origin: Irish

Cultural Roots

Irish English American

Quick Stats

Popularity Rank
#1
Total SSA Count
22,164
Syllables
2
Formality
Moderate
Nicknames
Lee

Playground Safety Score

✓ All Clear
Full profile for Liam →

Popularity Comparison

Guillermo Rank #833
Liam Rank #1

Liam is more popular, ranked #1 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

Liam ___

  • Liam James
  • Liam Alexander
  • Liam Thomas
  • Liam Michael
  • Liam Patrick
  • Liam Joseph

Sibling Name Ideas

Names that pair well as siblings.

If you choose Guillermo

Fernando Ricardo Alejandra Lucia Isabella

If you choose Liam

Olivia Emma Noah Charlotte Sophia

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 Liam more popular?

Liam is more popular, ranked #1 compared to Guillermo at #833 in the United States.

What do Guillermo and Liam mean?

Guillermo means "resolute protector" (Old High German wil (will) + helm (protection) origin). Liam means "strong-willed warrior" (Irish origin).

Are Guillermo and Liam boy or girl names?

Guillermo is primarily a boy name. Liam is primarily a boy name.

More Comparisons

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← Full profile: Guillermo ← Full profile: Liam Browse all baby names