Kayci vs Theodore

Baby Name Comparison — 2026

Kayci

Girl #5,128 Most Popular 2 Syllables

Meaning

"alert, vigilant, watchful"

Origin: Irish Gaelic

Cultural Roots

Irish American

Quick Stats

Popularity Rank
#5,128
Total SSA Count
26
Syllables
2
Formality
Casual
Nicknames
Kay, Kace

Playground Safety Score

✓ All Clear
Full profile for Kayci →

Popularity Comparison

Kayci Rank #5,128
Theodore Rank #4

Theodore is more popular, ranked #4 vs #5128 for Kayci.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kayci ___

  • Kayci Marie
  • Kayci Lynn
  • Kayci Elizabeth
  • Kayci Ann
  • Kayci Grace
  • Kayci Renee

Theodore ___

  • Theodore James
  • Theodore William
  • Theodore Alexander
  • Theodore John
  • Theodore Henry
  • Theodore Arthur

Sibling Name Ideas

Names that pair well as siblings.

If you choose Kayci

Brynn Reece Quinn Rylee Brady

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

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 Kayci or Theodore more popular?

Theodore is more popular, ranked #4 compared to Kayci at #5128 in the United States.

What do Kayci and Theodore mean?

Kayci means "alert, vigilant, watchful" (Irish Gaelic origin). Theodore means "divine gift" (Greek origin).

Are Kayci and Theodore boy or girl names?

Kayci is primarily a girl name. Theodore is primarily a boy name.

More Comparisons

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← Full profile: Kayci ← Full profile: Theodore Browse all baby names