Izaac vs Theodore

Baby Name Comparison — 2026

Izaac

Boy #2,685 Most Popular 2 Syllables

Meaning

"he laughs, he will laugh"

Origin: Hebrew

Cultural Roots

English Hebrew Jewish Christian

Quick Stats

Popularity Rank
#2,685
Total SSA Count
49
Syllables
2
Formality
Moderate
Nicknames
Iz, Ike, Zac

Playground Safety Score

All Clear

Popularity Comparison

Izaac Rank #2,685
Theodore Rank #4

Theodore is more popular, ranked #4 vs #2685 for Izaac.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Izaac ___

  • Izaac James
  • Izaac Thomas
  • Izaac John
  • Izaac David
  • Izaac Cole
  • Izaac Lee

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 Izaac

Jacob Noah Elijah Miriam Hannah

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 Izaac or Theodore more popular?

Theodore is more popular, ranked #4 compared to Izaac at #2685 in the United States.

What do Izaac and Theodore mean?

Izaac means "he laughs, he will laugh" (Hebrew origin). Theodore means "divine gift" (Greek origin).

Are Izaac and Theodore boy or girl names?

Izaac is primarily a boy name. Theodore is primarily a boy name.

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