Kieren vs Theodore

Baby Name Comparison — 2026

Kieren

Boy #6,209 Most Popular 2 Syllables

Meaning

"little dark one"

Origin: Irish Gaelic

Cultural Roots

Irish Celtic British Australian

Quick Stats

Popularity Rank
#6,209
Total SSA Count
15
Syllables
2
Formality
Moderate
Nicknames
Kier, Ki

Playground Safety Score

✓ All Clear
Full profile for Kieren →

Popularity Comparison

Kieren Rank #6,209
Theodore Rank #4

Theodore is more popular, ranked #4 vs #6209 for Kieren.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kieren ___

  • Kieren James
  • Kieren Patrick
  • Kieren Michael
  • Kieren John
  • Kieren Thomas
  • Kieren Liam

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 Kieren

Declan Niall Finn Ronan Aoife

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 Kieren or Theodore more popular?

Theodore is more popular, ranked #4 compared to Kieren at #6209 in the United States.

What do Kieren and Theodore mean?

Kieren means "little dark one" (Irish Gaelic origin). Theodore means "divine gift" (Greek origin).

Are Kieren and Theodore boy or girl names?

Kieren is primarily a boy name. Theodore is primarily a boy name.

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