Alasdair vs Erin

Baby Name Comparison — 2026

Alasdair

Boy #3,737 Most Popular 3 Syllables

Meaning

"defender of men"

Origin: Greek via Scottish Gaelic

Cultural Roots

Scottish Irish Gaelic

Quick Stats

Popularity Rank
#3,737
Total SSA Count
30
Syllables
3
Formality
Formal
Nicknames
Al, Aly, Alec

Playground Safety Score

✓ All Clear
Full profile for Alasdair →

Erin

Girl #797 Most Popular 2 Syllables

Meaning

"from Ireland, Ireland"

Origin: Irish Gaelic

Cultural Roots

Irish English American

Quick Stats

Popularity Rank
#797
Total SSA Count
352
Syllables
2
Formality
Moderate

Playground Safety Score

✓ All Clear
Full profile for Erin →

Popularity Comparison

Alasdair Rank #3,737
Erin Rank #797

Erin is more popular, ranked #797 vs #3737 for Alasdair.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Alasdair ___

  • Alasdair James
  • Alasdair Iain
  • Alasdair Fergus
  • Alasdair Ross
  • Alasdair Duncan
  • Alasdair Grant

Erin ___

  • Erin Grace
  • Erin Marie
  • Erin Anne
  • Erin Lynn
  • Erin Rose
  • Erin Claire

Sibling Name Ideas

Names that pair well as siblings.

If you choose Alasdair

Hamish Callum Finlay Catriona Fiona

If you choose Erin

Shannon Colleen Megan Patrick Sean

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 Alasdair or Erin more popular?

Erin is more popular, ranked #797 compared to Alasdair at #3737 in the United States.

What do Alasdair and Erin mean?

Alasdair means "defender of men" (Greek via Scottish Gaelic origin). Erin means "from Ireland, Ireland" (Irish Gaelic origin).

Are Alasdair and Erin boy or girl names?

Alasdair is primarily a boy name. Erin is primarily a girl name.

More Comparisons

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← Full profile: Alasdair ← Full profile: Erin Browse all baby names