Marcelo vs Theodore

Baby Name Comparison — 2026

Marcelo

Boy #445 Most Popular 3 Syllables

Meaning

"of Mars, dedicated to Mars"

Origin: Latin (Marcus/Mars)

Cultural Roots

Spanish Italian Portuguese Latin American

Quick Stats

Popularity Rank
#445
Total SSA Count
709
Syllables
3
Formality
Moderate
Nicknames
Marc, Marco, Marce

Playground Safety Score

✓ All Clear
Full profile for Marcelo →

Popularity Comparison

Marcelo Rank #445
Theodore Rank #4

Theodore is more popular, ranked #4 vs #445 for Marcelo.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Marcelo ___

  • Marcelo Antonio
  • Marcelo Luis
  • Marcelo Alejandro
  • Marcelo David
  • Marcelo Emilio
  • Marcelo Gabriel

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 Marcelo

Valentina Isabella Sebastián Mateo Lucia

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 Marcelo or Theodore more popular?

Theodore is more popular, ranked #4 compared to Marcelo at #445 in the United States.

What do Marcelo and Theodore mean?

Marcelo means "of Mars, dedicated to Mars" (Latin (Marcus/Mars) origin). Theodore means "divine gift" (Greek origin).

Are Marcelo and Theodore boy or girl names?

Marcelo is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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