Aleksey vs Theodore

Baby Name Comparison — 2026

Aleksey

Boy #5,998 Most Popular 3 Syllables

Meaning

"defender of mankind"

Origin: Greek

Cultural Roots

Russian Ukrainian Eastern European Slavic

Quick Stats

Popularity Rank
#5,998
Total SSA Count
15
Syllables
3
Formality
Formal
Nicknames
Alyosha, Lesha, Alex

Playground Safety Score

✓ All Clear
Full profile for Aleksey →

Popularity Comparison

Aleksey Rank #5,998
Theodore Rank #4

Theodore is more popular, ranked #4 vs #5998 for Aleksey.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Aleksey ___

  • Aleksey James
  • Aleksey Michael
  • Aleksey Ivan
  • Aleksey Nikolai
  • Aleksey William
  • Aleksey Andrew

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 Aleksey

Dmitri Nikolai Ivan Natasha Anastasia

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 Aleksey or Theodore more popular?

Theodore is more popular, ranked #4 compared to Aleksey at #5998 in the United States.

What do Aleksey and Theodore mean?

Aleksey means "defender of mankind" (Greek origin). Theodore means "divine gift" (Greek origin).

Are Aleksey and Theodore boy or girl names?

Aleksey is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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