Callister vs Kai

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 #76 Most Popular 1 Syllable

"sea"

Origin: Hawaiian

Hawaiian Scandinavian Japanese American Chinese

✓ All Clear

Callister Rank #43,579

Kai Rank #76

Kai is more popular, ranked #76 vs #43579 for Callister.

Is Callister or Kai more popular?

Kai is more popular, ranked #76 compared to Callister at #43579 in the United States.

What do Callister and Kai mean?

Callister means "defender of men" (Greek via Gaelic origin). Kai means "sea" (Hawaiian origin).

Are Callister and Kai boy or girl names?

Callister is primarily a boy name. Kai is primarily a boy name.