Caitlin vs Liam

Baby Name Comparison — 2026

Caitlin

Girl #1,686 Most Popular 2 Syllables

Meaning

"pure, clear"

Origin: Greek via Irish

Cultural Roots

Irish Welsh American English Australian

Quick Stats

Popularity Rank
#1,686
Total SSA Count
121
Syllables
2
Formality
Moderate
Nicknames
Cait, Kate, Katie

Playground Safety Score

✓ All Clear
Full profile for Caitlin →

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

Caitlin Rank #1,686
Liam Rank #1

Liam is more popular, ranked #1 vs #1686 for Caitlin.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Caitlin ___

  • Caitlin Marie
  • Caitlin Ann
  • Caitlin Elizabeth
  • Caitlin Rose
  • Caitlin Grace
  • Caitlin Louise

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 Caitlin

Siobhan Fiona Ciara Declan Conor

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 Caitlin or Liam more popular?

Liam is more popular, ranked #1 compared to Caitlin at #1686 in the United States.

What do Caitlin and Liam mean?

Caitlin means "pure, clear" (Greek via Irish origin). Liam means "strong-willed warrior" (Irish origin).

Are Caitlin and Liam boy or girl names?

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

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