Kacie vs Siara

Baby Name Comparison — 2026

Kacie

Girl #1,793 Most Popular 2 Syllables

Meaning

"vigilant, watchful in battle"

Origin: Irish Gaelic

Cultural Roots

American Irish English

Quick Stats

Popularity Rank
#1,793
Total SSA Count
112
Syllables
2
Formality
Casual
Nicknames
Kace

Playground Safety Score

✓ All Clear
Full profile for Kacie →

Siara

Girl #1,708 Most Popular 2 Syllables

Meaning

"dark, black-haired"

Origin: Irish Gaelic

Cultural Roots

Irish English American

Quick Stats

Popularity Rank
#1,708
Total SSA Count
119
Syllables
2
Formality
Moderate
Nicknames
Si, Sia

Playground Safety Score

✓ All Clear
Full profile for Siara →

Popularity Comparison

Kacie Rank #1,793
Siara Rank #1,708

Siara is more popular, ranked #1708 vs #1793 for Kacie.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kacie ___

  • Kacie Marie
  • Kacie Ann
  • Kacie Lynn
  • Kacie Jo
  • Kacie Lee
  • Kacie Elise

Siara ___

  • Siara Rose
  • Siara Faye
  • Siara Grace
  • Siara Marie
  • Siara Bridget
  • Siara Maeve

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kacie

Tyler Brady Logan Riley Hayley

If you choose Siara

Niamh Aoife Rory Declan Sorcha

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 Kacie or Siara more popular?

Siara is more popular, ranked #1708 compared to Kacie at #1793 in the United States.

What do Kacie and Siara mean?

Kacie means "vigilant, watchful in battle" (Irish Gaelic origin). Siara means "dark, black-haired" (Irish Gaelic origin).

Are Kacie and Siara boy or girl names?

Kacie is primarily a girl name. Siara is primarily a girl name.

More Comparisons

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← Full profile: Kacie ← Full profile: Siara Browse all baby names