Callister vs Nio

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 #6,449 Most Popular 2 Syllables

"benevolent king"

Origin: Japanese

Japanese Spanish Italian

✓ All Clear

Callister Rank #43,579

Nio Rank #6,449

Nio is more popular, ranked #6449 vs #43579 for Callister.

Is Callister or Nio more popular?

Nio is more popular, ranked #6449 compared to Callister at #43579 in the United States.

What do Callister and Nio mean?

Callister means "defender of men" (Greek via Gaelic origin). Nio means "benevolent king" (Japanese origin).

Are Callister and Nio boy or girl names?

Callister is primarily a boy name. Nio is primarily a boy name.