Kelvin vs Theodore

Baby Name Comparison — 2026

Kelvin

Boy #1,084 Most Popular 2 Syllables

Meaning

"from the River Kelvin, narrow river"

Origin: Brythonic Celtic

Cultural Roots

Scottish English British

Quick Stats

Popularity Rank
#1,084
Total SSA Count
201
Syllables
2
Formality
Moderate
Nicknames
Kel, Kelv

Playground Safety Score

✓ All Clear
Full profile for Kelvin →

Popularity Comparison

Kelvin Rank #1,084
Theodore Rank #4

Theodore is more popular, ranked #4 vs #1084 for Kelvin.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Kelvin ___

  • Kelvin James
  • Kelvin Lee
  • Kelvin Grey
  • Kelvin John
  • Kelvin Paul
  • Kelvin Dean

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 Kelvin

Melvin Kevin Calvin Alvin Gavin

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 Kelvin or Theodore more popular?

Theodore is more popular, ranked #4 compared to Kelvin at #1084 in the United States.

What do Kelvin and Theodore mean?

Kelvin means "from the River Kelvin, narrow river" (Brythonic Celtic origin). Theodore means "divine gift" (Greek origin).

Are Kelvin and Theodore boy or girl names?

Kelvin is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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