Sir vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Sir Rank #1,964
Theodore Rank #4

Theodore is more popular, ranked #4 vs #1964 for Sir.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Sir ___

  • Sir Miles
  • Sir James
  • Sir William
  • Sir Henry
  • Sir Leon
  • Sir Xavier

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 Sir

Duke King Major Royal Noble

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 Sir or Theodore more popular?

Theodore is more popular, ranked #4 compared to Sir at #1964 in the United States.

What do Sir and Theodore mean?

Sir means "lord, master" (Old French origin). Theodore means "divine gift" (Greek origin).

Are Sir and Theodore boy or girl names?

Sir is primarily a boy name. Theodore is primarily a boy name.

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