Iain vs Theodore

Baby Name Comparison — 2026

Iain

Boy #4,295 Most Popular 2 Syllables

Meaning

"God is gracious"

Origin: Hebrew via Gaelic

Cultural Roots

Scottish Irish British Gaelic

Quick Stats

Popularity Rank
#4,295
Total SSA Count
25
Syllables
2
Formality
Moderate

Playground Safety Score

✓ All Clear
Full profile for Iain →

Popularity Comparison

Iain Rank #4,295
Theodore Rank #4

Theodore is more popular, ranked #4 vs #4295 for Iain.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Iain ___

  • Iain Fraser
  • Iain Alasdair
  • Iain Ross
  • Iain Duncan
  • Iain James
  • Iain Malcolm

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 Iain

Ewan Finlay Hamish Calum Fiona

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 Iain or Theodore more popular?

Theodore is more popular, ranked #4 compared to Iain at #4295 in the United States.

What do Iain and Theodore mean?

Iain means "God is gracious" (Hebrew via Gaelic origin). Theodore means "divine gift" (Greek origin).

Are Iain and Theodore boy or girl names?

Iain is primarily a boy name. Theodore is primarily a boy name.

More Comparisons

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