Cassidy vs Liam

Baby Name Comparison — 2026

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

Cassidy Rank #476
Liam Rank #1

Liam is more popular, ranked #1 vs #476 for Cassidy.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cassidy ___

  • Cassidy Rose
  • Cassidy Ann
  • Cassidy Jane
  • Cassidy Renee
  • Cassidy Elizabeth
  • Cassidy Marie

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 Cassidy

Montana Savannah Ryder Colton Dakota

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 Cassidy or Liam more popular?

Liam is more popular, ranked #1 compared to Cassidy at #476 in the United States.

What do Cassidy and Liam mean?

Cassidy means "curly-haired" (Irish origin). Liam means "strong-willed warrior" (Irish origin).

Are Cassidy and Liam boy or girl names?

Cassidy is primarily a girl name. Liam is primarily a boy name.

More Comparisons

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