Isador vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Isador Rank #30,483
Theodore Rank #4

Theodore is more popular, ranked #4 vs #30483 for Isador.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Isador ___

No pairings available yet.

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 Isador

No sibling data available yet.

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 Isador or Theodore more popular?

Theodore is more popular, ranked #4 compared to Isador at #30483 in the United States.

What do Isador and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Isador and Theodore boy or girl names?

Isador is primarily a boy name. Theodore is primarily a boy name.

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