Cassie vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Cassie Rank #1,273
Theodore Rank #4

Theodore is more popular, ranked #4 vs #1273 for Cassie.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Cassie ___

  • Cassie Rose
  • Cassie Mae
  • Cassie Lynn
  • Cassie Jean
  • Cassie Anne
  • Cassie Grace

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 Cassie

Maggie Tess Ruby Ellie Molly

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 Cassie or Theodore more popular?

Theodore is more popular, ranked #4 compared to Cassie at #1273 in the United States.

What do Cassie and Theodore mean?

Cassie means "shining upon men" (Greek origin). Theodore means "divine gift" (Greek origin).

Are Cassie and Theodore boy or girl names?

Cassie is primarily a girl name. Theodore is primarily a boy name.

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