Liam vs Theresa

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 →

Theresa

Girl #1,501 Most Popular 3 Syllables

Meaning

"to harvest, reaper"

Origin: Greek

Cultural Roots

Spanish Italian German English Portuguese

Quick Stats

Popularity Rank
#1,501
Total SSA Count
145
Syllables
3
Formality
Moderate
Nicknames
Terry, Terri, Tess

Playground Safety Score

✓ All Clear
Full profile for Theresa →

Popularity Comparison

Liam Rank #1
Theresa Rank #1,501

Liam is more popular, ranked #1 vs #1501 for Theresa.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Liam ___

  • Liam James
  • Liam Alexander
  • Liam Thomas
  • Liam Michael
  • Liam Patrick
  • Liam Joseph

Theresa ___

  • Theresa Marie
  • Theresa Ann
  • Theresa Grace
  • Theresa Rose
  • Theresa Louise
  • Theresa Claire

Sibling Name Ideas

Names that pair well as siblings.

If you choose Liam

Olivia Emma Noah Charlotte Sophia

If you choose Theresa

Margaret Catherine Bernard Frances Joseph

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 Liam or Theresa more popular?

Liam is more popular, ranked #1 compared to Theresa at #1501 in the United States.

What do Liam and Theresa mean?

Liam means "strong-willed warrior" (Irish origin). Theresa means "to harvest, reaper" (Greek origin).

Are Liam and Theresa boy or girl names?

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

More Comparisons

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