Rein vs Theodore

Baby Name Comparison — 2026

Rein

Boy #6,296 Most Popular 1 Syllable

Meaning

"pure, clean"

Origin: Germanic rein-

Cultural Roots

Dutch German Estonian Scandinavian

Quick Stats

Popularity Rank
#6,296
Total SSA Count
14
Syllables
1
Formality
Moderate

Playground Safety Score

✓ All Clear
Full profile for Rein →

Popularity Comparison

Rein Rank #6,296
Theodore Rank #4

Theodore is more popular, ranked #4 vs #6296 for Rein.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Rein ___

  • Rein James
  • Rein Thomas
  • Rein August
  • Rein Willem
  • Rein Henrik
  • Rein Pieter

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 Rein

Sven Lars Anya Lore Toon

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 Rein or Theodore more popular?

Theodore is more popular, ranked #4 compared to Rein at #6296 in the United States.

What do Rein and Theodore mean?

Rein means "pure, clean" (Germanic rein- origin). Theodore means "divine gift" (Greek origin).

Are Rein and Theodore boy or girl names?

Rein is primarily a boy name. Theodore is primarily a boy name.

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