Callister vs Dio

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 #3,613 Most Popular 2 Syllables

"God, divine"

Origin: Italian/Latin

Italian Greek Romanian Brazilian American

✓ All Clear

Callister Rank #43,579

Dio Rank #3,613

Dio is more popular, ranked #3613 vs #43579 for Callister.

Is Callister or Dio more popular?

Dio is more popular, ranked #3613 compared to Callister at #43579 in the United States.

What do Callister and Dio mean?

Callister means "defender of men" (Greek via Gaelic origin). Dio means "God, divine" (Italian/Latin origin).

Are Callister and Dio boy or girl names?

Callister is primarily a boy name. Dio is primarily a boy name.