Callister vs Caius

Baby Name Comparison — 2026

Callister

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Boy #1,063 Most Popular 2 Syllables

"to rejoice, joyful"

Origin: Latin

Roman British European American

✓ All Clear

Callister Rank #43,579

Caius Rank #1,063

Caius is more popular, ranked #1063 vs #43579 for Callister.

Is Callister or Caius more popular?

Caius is more popular, ranked #1063 compared to Callister at #43579 in the United States.

What do Callister and Caius mean?

Callister means "defender of men" (Greek via Gaelic origin). Caius means "to rejoice, joyful" (Latin origin).

Are Callister and Caius boy or girl names?

Callister is primarily a boy name. Caius is primarily a boy name.