Kasyn vs Callister

Baby Name Comparison — 2026

Kasyn

Boy #2,055 Most Popular 2 Syllables

"vigilant in war"

Origin: Irish

American Irish

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Kasyn Rank #2,055

Callister Rank #43,579

Kasyn is more popular, ranked #2055 vs #43579 for Callister.

Is Kasyn or Callister more popular?

Kasyn is more popular, ranked #2055 compared to Callister at #43579 in the United States.

What do Kasyn and Callister mean?

Kasyn means "vigilant in war" (Irish origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Kasyn and Callister boy or girl names?

Kasyn is primarily a boy name. Callister is primarily a boy name.