Atreus vs Theodore

Baby Name Comparison — 2026

Atreus

Boy #495 Most Popular 3 Syllables

Meaning

"fearless, not cowardly"

Origin: Greek

Cultural Roots

American Greek

Quick Stats

Popularity Rank
#495
Total SSA Count
622
Syllables
3
Formality
Formal
Nicknames
Atro, Rey, Tree

Playground Safety Score

✓ All Clear
Full profile for Atreus →

Popularity Comparison

Atreus Rank #495
Theodore Rank #4

Theodore is more popular, ranked #4 vs #495 for Atreus.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Atreus ___

  • Atreus James
  • Atreus Cole
  • Atreus Grey
  • Atreus Reid
  • Atreus Orion
  • Atreus Zane

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 Atreus

Achilles Leonidas Cassandra Persephone Orion

If you choose Theodore

Olivia Charlotte Amelia Eleanor Oliver

Which Name Fits Your Family?

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1. Which style feels more like your family?

Frequently Asked Questions

Is Atreus or Theodore more popular?

Theodore is more popular, ranked #4 compared to Atreus at #495 in the United States.

What do Atreus and Theodore mean?

Atreus means "fearless, not cowardly" (Greek origin). Theodore means "divine gift" (Greek origin).

Are Atreus and Theodore boy or girl names?

Atreus is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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