Alenna vs Kacy

Baby Name Comparison — 2026

Alenna

Girl #5,959 Most Popular 3 Syllables

Meaning

"bright, shining light"

Origin: Greek

Cultural Roots

Irish Scottish American Eastern European

Quick Stats

Popularity Rank
#5,959
Total SSA Count
21
Syllables
3
Formality
Moderate
Nicknames
Allie, Lena, Len

Playground Safety Score

✓ All Clear
Full profile for Alenna →

Kacy

Girl #6,085 Most Popular 2 Syllables

Meaning

"vigilant, watchful"

Origin: Irish Gaelic (Cathasaigh)

Cultural Roots

American Irish-American

Quick Stats

Popularity Rank
#6,085
Total SSA Count
20
Syllables
2
Formality
Casual
Nicknames
Kay, K

Playground Safety Score

✓ All Clear
Full profile for Kacy →

Popularity Comparison

Alenna Rank #5,959
Kacy Rank #6,085

Alenna is more popular, ranked #5959 vs #6085 for Kacy.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Alenna ___

  • Alenna Rose
  • Alenna Grace
  • Alenna Marie
  • Alenna Joy
  • Alenna Claire
  • Alenna Faith

Kacy ___

  • Kacy Ann
  • Kacy Marie
  • Kacy Lynn
  • Kacy Rose
  • Kacy Grace
  • Kacy Elaine

Sibling Name Ideas

Names that pair well as siblings.

If you choose Alenna

Mira Calla Nora Isla Owen

If you choose Kacy

Brady Riley Avery Connor Logan

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 Alenna or Kacy more popular?

Alenna is more popular, ranked #5959 compared to Kacy at #6085 in the United States.

What do Alenna and Kacy mean?

Alenna means "bright, shining light" (Greek origin). Kacy means "vigilant, watchful" (Irish Gaelic (Cathasaigh) origin).

Are Alenna and Kacy boy or girl names?

Alenna is primarily a girl name. Kacy is primarily a girl name.

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← Full profile: Alenna ← Full profile: Kacy Browse all baby names