Keira vs Louisa

Baby Name Comparison — 2026

Keira

Girl #609 Most Popular 2 Syllables

Meaning

"dark one, black-haired one"

Origin: Irish Gaelic

Cultural Roots

Irish Scottish English American

Quick Stats

Popularity Rank
#609
Total SSA Count
492
Syllables
2
Formality
Moderate
Nicknames
Kei, Kee

Playground Safety Score

✓ All Clear
Full profile for Keira →

Louisa

Girl #733 Most Popular 3 Syllables

Meaning

"famous warrior"

Origin: Old Frankish/Germanic

Cultural Roots

English German French Italian Spanish

Quick Stats

Popularity Rank
#733
Total SSA Count
383
Syllables
3
Formality
Formal
Nicknames
Lou, Louie, Lulu

Playground Safety Score

✓ All Clear
Full profile for Louisa →

Popularity Comparison

Keira Rank #609
Louisa Rank #733

Keira is more popular, ranked #609 vs #733 for Louisa.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Keira ___

  • Keira Rose
  • Keira Elizabeth
  • Keira Anne
  • Keira Grace
  • Keira Louise
  • Keira Marie

Louisa ___

  • Louisa May
  • Louisa Grace
  • Louisa Anne
  • Louisa Claire
  • Louisa Jane
  • Louisa Rose

Sibling Name Ideas

Names that pair well as siblings.

If you choose Keira

Niamh Aoife Siobhan Declan Cillian

If you choose Louisa

Josephine Eleanor Frederick Arthur Harriet

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 Keira or Louisa more popular?

Keira is more popular, ranked #609 compared to Louisa at #733 in the United States.

What do Keira and Louisa mean?

Keira means "dark one, black-haired one" (Irish Gaelic origin). Louisa means "famous warrior" (Old Frankish/Germanic origin).

Are Keira and Louisa boy or girl names?

Keira is primarily a girl name. Louisa is primarily a girl name.

More Comparisons

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← Full profile: Keira ← Full profile: Louisa Browse all baby names