Gio vs Callister

Baby Name Comparison — 2026

Gio

Boy #1,163 Most Popular 2 Syllables

"God is gracious"

Origin: Hebrew via Italian

Italian Spanish American

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Gio Rank #1,163

Callister Rank #43,579

Gio is more popular, ranked #1163 vs #43579 for Callister.

Is Gio or Callister more popular?

Gio is more popular, ranked #1163 compared to Callister at #43579 in the United States.

What do Gio and Callister mean?

Gio means "God is gracious" (Hebrew via Italian origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Gio and Callister boy or girl names?

Gio is primarily a boy name. Callister is primarily a boy name.