Callister vs Theodore

Baby Name Comparison — 2026

Popularity Comparison

Callister Rank #43,579
Theodore Rank #4

Theodore is more popular, ranked #4 vs #43579 for Callister.

Popularity Over Time

Historical US popularity rank — lower number means more popular.

Middle Name Pairings

Callister ___

  • Callister James
  • Callister Robert
  • Callister Alexander
  • Callister William
  • Callister Andrew
  • Callister Thomas

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 Callister

Angus Ewan Hamish Catriona Fiona

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 Callister or Theodore more popular?

Theodore is more popular, ranked #4 compared to Callister at #43579 in the United States.

What do Callister and Theodore mean?

Callister means "defender of men" (Greek via Gaelic origin). Theodore means "divine gift" (Greek origin).

Are Callister and Theodore boy or girl names?

Callister is primarily a boy name. Theodore is primarily a boy name.

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