Isabella vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Isabella Rank #7
Theodore Rank #4

Theodore is more popular, ranked #4 vs #7 for Isabella.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Isabella ___

  • Isabella Rose
  • Isabella Grace
  • Isabella Marie
  • Isabella Anne
  • Isabella Claire
  • Isabella Louise

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 Isabella

Sophia Olivia Charlotte Lucas Sebastian

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 Isabella or Theodore more popular?

Theodore is more popular, ranked #4 compared to Isabella at #7 in the United States.

What do Isabella and Theodore mean?

Isabella means "God is my oath" (Hebrew origin). Theodore means "divine gift" (Greek origin).

Are Isabella and Theodore boy or girl names?

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

More Comparisons

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