Gaius vs Theodore

Baby Name Comparison — 2026

Gaius

Boy #3,655 Most Popular 2 Syllables

Meaning

"to rejoice, happy, glad"

Origin: Latin

Cultural Roots

Roman Latin English American

Quick Stats

Popularity Rank
#3,655
Total SSA Count
31
Syllables
2
Formality
Formal
Nicknames
Gai, Guy

Playground Safety Score

✓ All Clear
Full profile for Gaius →

Popularity Comparison

Gaius Rank #3,655
Theodore Rank #4

Theodore is more popular, ranked #4 vs #3655 for Gaius.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Gaius ___

  • Gaius Marcus
  • Gaius Julius
  • Gaius Alexander
  • Gaius Felix
  • Gaius James
  • Gaius William

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 Gaius

Julius Octavia Livia Marcus Caspian

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 Gaius or Theodore more popular?

Theodore is more popular, ranked #4 compared to Gaius at #3655 in the United States.

What do Gaius and Theodore mean?

Gaius means "to rejoice, happy, glad" (Latin origin). Theodore means "divine gift" (Greek origin).

Are Gaius and Theodore boy or girl names?

Gaius is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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