Jack vs Liam

Baby Name Comparison — 2026

Jack

Boy #15 Most Popular 1 Syllable

Meaning

"supplanter"

Origin: Hebrew

Cultural Roots

English Irish American Australian

Quick Stats

Popularity Rank
#15
Total SSA Count
8,434
Syllables
1
Formality
Casual
Nicknames
Jackie

Playground Safety Score

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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
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Popularity Comparison

Jack Rank #15
Liam Rank #1

Liam is more popular, ranked #1 vs #15 for Jack.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Jack ___

  • Jack Henry
  • Jack Thomas
  • Jack William
  • Jack Oliver
  • Jack James
  • Jack Edward

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 Jack

Charlie Lily Oliver Sophie Harry

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 Jack or Liam more popular?

Liam is more popular, ranked #1 compared to Jack at #15 in the United States.

What do Jack and Liam mean?

Jack means "supplanter" (Hebrew origin). Liam means "strong-willed warrior" (Irish origin).

Are Jack and Liam boy or girl names?

Jack is primarily a boy name. Liam is primarily a boy name.

More Comparisons

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