Casto vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Casto Rank #34,032
Theodore Rank #4

Theodore is more popular, ranked #4 vs #34032 for Casto.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Casto ___

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 Casto

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 Casto or Theodore more popular?

Theodore is more popular, ranked #4 compared to Casto at #34032 in the United States.

What do Casto and Theodore mean?

Theodore means "divine gift" (Greek origin).

Are Casto and Theodore boy or girl names?

Casto is primarily a boy name. Theodore is primarily a boy name.

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