Casimir vs Liam

Baby Name Comparison — 2026

Casimir

Boy #2,401 Most Popular 3 Syllables

Meaning

"proclaimer of peace"

Origin: Old Polish Slavic

Cultural Roots

Polish Czech Lithuanian French Catholic

Quick Stats

Popularity Rank
#2,401
Total SSA Count
58
Syllables
3
Formality
Formal
Nicknames
Cas, Caz, Cassi

Playground Safety Score

✓ All Clear
Full profile for Casimir →

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

Casimir Rank #2,401
Liam Rank #1

Liam is more popular, ranked #1 vs #2401 for Casimir.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Casimir ___

  • Casimir James
  • Casimir Anthony
  • Casimir John
  • Casimir Louis
  • Casimir Edmund
  • Casimir Felix

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 Casimir

Leopold Celestine Ambrose Isolde Ottoline

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 Casimir or Liam more popular?

Liam is more popular, ranked #1 compared to Casimir at #2401 in the United States.

What do Casimir and Liam mean?

Casimir means "proclaimer of peace" (Old Polish Slavic origin). Liam means "strong-willed warrior" (Irish origin).

Are Casimir and Liam boy or girl names?

Casimir is primarily a boy name. Liam is primarily a boy name.

More Comparisons

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