Fionn vs Liam

Baby Name Comparison — 2026

Fionn

Boy #4,580 Most Popular 1 Syllable

Meaning

"fair, white, bright"

Origin: Old Irish

Cultural Roots

Irish Scottish Celtic

Quick Stats

Popularity Rank
#4,580
Total SSA Count
22
Syllables
1
Formality
Moderate
Nicknames
Finn, Fio

Playground Safety Score

✓ All Clear
Full profile for Fionn →

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

Fionn Rank #4,580
Liam Rank #1

Liam is more popular, ranked #1 vs #4580 for Fionn.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Fionn ___

  • Fionn James
  • Fionn Patrick
  • Fionn Cian
  • Fionn Sean
  • Fionn Rory
  • Fionn Hugh

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 Fionn

Saoirse Niamh Cillian Aoife Oisin

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 Fionn or Liam more popular?

Liam is more popular, ranked #1 compared to Fionn at #4580 in the United States.

What do Fionn and Liam mean?

Fionn means "fair, white, bright" (Old Irish origin). Liam means "strong-willed warrior" (Irish origin).

Are Fionn and Liam boy or girl names?

Fionn is primarily a boy name. Liam is primarily a boy name.

More Comparisons

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