Mia vs Theo

Baby Name Comparison — 2026

Mia

Girl #5 Most Popular 2 Syllables

Meaning

"mine, beloved"

Origin: Scandinavian

Cultural Roots

Italian Scandinavian Spanish

Quick Stats

Popularity Rank
#5
Total SSA Count
12,113
Syllables
2
Formality
Casual

Playground Safety Score

✓ All Clear
Full profile for Mia →

Theo

Boy #80 Most Popular 2 Syllables

Meaning

"gift of God"

Origin: Greek (theodoros)

Cultural Roots

English Greek French German American

Quick Stats

Popularity Rank
#80
Total SSA Count
4,110
Syllables
2
Formality
Moderate

Playground Safety Score

✓ All Clear
Full profile for Theo →

Popularity Comparison

Mia Rank #5
Theo Rank #80

Mia is more popular, ranked #5 vs #80 for Theo.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Mia ___

  • Mia Rose
  • Mia Grace
  • Mia Jane
  • Mia Claire
  • Mia Elizabeth
  • Mia Louise

Theo ___

  • Theo James
  • Theo William
  • Theo Alexander
  • Theo Samuel
  • Theo Felix
  • Theo August

Sibling Name Ideas

Names that pair well as siblings.

If you choose Mia

Liam Noah Sophia Olivia Ava

If you choose Theo

Oliver Felix Eleanor Beatrice Arthur

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 Mia or Theo more popular?

Mia is more popular, ranked #5 compared to Theo at #80 in the United States.

What do Mia and Theo mean?

Mia means "mine, beloved" (Scandinavian origin). Theo means "gift of God" (Greek (theodoros) origin).

Are Mia and Theo boy or girl names?

Mia is primarily a girl name. Theo is primarily a boy name.

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← Full profile: Mia ← Full profile: Theo Browse all baby names