Keiko vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Keiko Rank #5,574
Theodore Rank #4

Theodore is more popular, ranked #4 vs #5574 for Keiko.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Keiko ___

  • Keiko Marie
  • Keiko Lynn
  • Keiko Rose
  • Keiko Ann
  • Keiko Grace
  • Keiko Jane

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 Keiko

Hana Yuki Sakura Riku Kenji

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 Keiko or Theodore more popular?

Theodore is more popular, ranked #4 compared to Keiko at #5574 in the United States.

What do Keiko and Theodore mean?

Keiko means "joyful child" (Japanese origin). Theodore means "divine gift" (Greek origin).

Are Keiko and Theodore boy or girl names?

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

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