Illias vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Illias Rank #17,848
Theodore Rank #4

Theodore is more popular, ranked #4 vs #17848 for Illias.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Illias ___

No pairings available yet.

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 Illias

No sibling data available yet.

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 Illias or Theodore more popular?

Theodore is more popular, ranked #4 compared to Illias at #17848 in the United States.

What do Illias and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Illias and Theodore boy or girl names?

Illias is primarily a boy name. Theodore is primarily a boy name.

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