Keyan vs Theodore

Baby Name Comparison — 2026

Keyan

Boy #3,671 Most Popular 2 Syllables

Meaning

"ancient, enduring, long-standing"

Origin: Old Irish

Cultural Roots

Irish Persian American

Quick Stats

Popularity Rank
#3,671
Total SSA Count
31
Syllables
2
Formality
Moderate
Nicknames
Key, Kee

Playground Safety Score

✓ All Clear
Full profile for Keyan →

Popularity Comparison

Keyan Rank #3,671
Theodore Rank #4

Theodore is more popular, ranked #4 vs #3671 for Keyan.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Keyan ___

  • Keyan James
  • Keyan Michael
  • Keyan Patrick
  • Keyan Liam
  • Keyan Sean
  • Keyan Finn

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 Keyan

Declan Niamh Finn Ciara Rory

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 Keyan or Theodore more popular?

Theodore is more popular, ranked #4 compared to Keyan at #3671 in the United States.

What do Keyan and Theodore mean?

Keyan means "ancient, enduring, long-standing" (Old Irish origin). Theodore means "divine gift" (Greek origin).

Are Keyan and Theodore boy or girl names?

Keyan is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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