Sirius vs Theodore

Baby Name Comparison — 2026

Sirius

Boy #2,650 Most Popular 3 Syllables

Meaning

"glowing, scorching"

Origin: Greek

Cultural Roots

English American European

Quick Stats

Popularity Rank
#2,650
Total SSA Count
50
Syllables
3
Formality
Moderate
Nicknames
Siri, Rius

Playground Safety Score

✓ All Clear
Full profile for Sirius →

Popularity Comparison

Sirius Rank #2,650
Theodore Rank #4

Theodore is more popular, ranked #4 vs #2650 for Sirius.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Sirius ___

  • Sirius James
  • Sirius Orion
  • Sirius Leo
  • Sirius Caspian
  • Sirius Felix
  • Sirius 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 Sirius

Orion Luna Lyra Remus Rigel

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 Sirius or Theodore more popular?

Theodore is more popular, ranked #4 compared to Sirius at #2650 in the United States.

What do Sirius and Theodore mean?

Sirius means "glowing, scorching" (Greek origin). Theodore means "divine gift" (Greek origin).

Are Sirius and Theodore boy or girl names?

Sirius is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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