Allister vs Theodore

Baby Name Comparison — 2026

Allister

Boy #2,601 Most Popular 3 Syllables

Meaning

"defender of men"

Origin: Greek via Scottish Gaelic

Cultural Roots

Scottish Irish English Celtic

Quick Stats

Popularity Rank
#2,601
Total SSA Count
51
Syllables
3
Formality
Formal
Nicknames
Al, Alli, Ali

Playground Safety Score

✓ All Clear
Full profile for Allister →

Popularity Comparison

Allister Rank #2,601
Theodore Rank #4

Theodore is more popular, ranked #4 vs #2601 for Allister.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Allister ___

  • Allister James
  • Allister Reid
  • Allister Grant
  • Allister Scott
  • Allister Ross
  • Allister Graham

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 Allister

Callum Angus Fiona Catriona Duncan

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 Allister or Theodore more popular?

Theodore is more popular, ranked #4 compared to Allister at #2601 in the United States.

What do Allister and Theodore mean?

Allister means "defender of men" (Greek via Scottish Gaelic origin). Theodore means "divine gift" (Greek origin).

Are Allister and Theodore boy or girl names?

Allister is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

Theodore vs Allister Allister vs Halen Allister vs Golden Allister vs Reilly Allister vs Darsh
← Full profile: Allister ← Full profile: Theodore Browse all baby names