Cillian 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

Cillian Rank #464
Liam Rank #1

Liam is more popular, ranked #1 vs #464 for Cillian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cillian ___

  • Cillian James
  • Cillian Patrick
  • Cillian Michael
  • Cillian Finn
  • Cillian Declan
  • Cillian Joseph

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 Cillian

Declan Finn Conor Siobhan Saoirse

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 Cillian or Liam more popular?

Liam is more popular, ranked #1 compared to Cillian at #464 in the United States.

What do Cillian and Liam mean?

Cillian means "strife, war" (Old Irish origin). Liam means "strong-willed warrior" (Irish origin).

Are Cillian and Liam boy or girl names?

Cillian is primarily a boy name. Liam is primarily a boy name.

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