Kian vs Theodore

Baby Name Comparison — 2026

Kian

Boy #417 Most Popular 2 Syllables

Meaning

"ancient, enduring"

Origin: Old Irish

Cultural Roots

Irish Persian English

Quick Stats

Popularity Rank
#417
Total SSA Count
765
Syllables
2
Formality
Moderate
Nicknames
Ki

Playground Safety Score

✓ All Clear
Full profile for Kian →

Popularity Comparison

Kian Rank #417
Theodore Rank #4

Theodore is more popular, ranked #4 vs #417 for Kian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kian ___

  • Kian James
  • Kian Patrick
  • Kian Owen
  • Kian Finn
  • Kian Lucas
  • Kian Thomas

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 Kian

Finn Declan Ronan Ciara Niamh

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 Kian or Theodore more popular?

Theodore is more popular, ranked #4 compared to Kian at #417 in the United States.

What do Kian and Theodore mean?

Kian means "ancient, enduring" (Old Irish origin). Theodore means "divine gift" (Greek origin).

Are Kian and Theodore boy or girl names?

Kian is primarily a boy name. Theodore is primarily a boy name.

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