Theodore vs Callister

Baby Name Comparison — 2026

Theodore

Boy #4 Most Popular 3 Syllables

"divine gift"

Origin: Greek

English French Greek

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Theodore Rank #4

Callister Rank #43,579

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

Is Theodore or Callister more popular?

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

What do Theodore and Callister mean?

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

Are Theodore and Callister boy or girl names?

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