Casian vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Casian Rank #10,470
Theodore Rank #4

Theodore is more popular, ranked #4 vs #10470 for Casian.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Casian ___

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 Casian

No sibling data available yet.

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 Casian or Theodore more popular?

Theodore is more popular, ranked #4 compared to Casian at #10470 in the United States.

What do Casian and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Casian and Theodore boy or girl names?

Casian is primarily a boy name. Theodore is primarily a boy name.

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