Cosimo vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Cosimo Rank #5,127
Theodore Rank #4

Theodore is more popular, ranked #4 vs #5127 for Cosimo.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cosimo ___

  • Cosimo James
  • Cosimo Luca
  • Cosimo Antonio
  • Cosimo Marco
  • Cosimo Rafael
  • Cosimo Dante

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 Cosimo

Lorenzo Matteo Isadora Giulia Leonardo

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 Cosimo or Theodore more popular?

Theodore is more popular, ranked #4 compared to Cosimo at #5127 in the United States.

What do Cosimo and Theodore mean?

Cosimo means "order, beauty, universe" (Greek origin). Theodore means "divine gift" (Greek origin).

Are Cosimo and Theodore boy or girl names?

Cosimo is primarily a boy name. Theodore is primarily a boy name.

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