Niles vs Theodore

Baby Name Comparison — 2026

Niles

Boy #3,177 Most Popular 1 Syllable

Meaning

"champion, winner"

Origin: Irish Gaelic Niall

Cultural Roots

British American Irish

Quick Stats

Popularity Rank
#3,177
Total SSA Count
38
Syllables
1
Formality
Formal
Nicknames
Nile, Ni

Playground Safety Score

✓ All Clear
Full profile for Niles →

Popularity Comparison

Niles Rank #3,177
Theodore Rank #4

Theodore is more popular, ranked #4 vs #3177 for Niles.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Niles ___

  • Niles Alexander
  • Niles James
  • Niles Edward
  • Niles Thomas
  • Niles William
  • Niles Oliver

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 Niles

Miles Julian Alistair Cordelia Beatrice

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 Niles or Theodore more popular?

Theodore is more popular, ranked #4 compared to Niles at #3177 in the United States.

What do Niles and Theodore mean?

Niles means "champion, winner" (Irish Gaelic Niall origin). Theodore means "divine gift" (Greek origin).

Are Niles and Theodore boy or girl names?

Niles is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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