Kay vs Callister

Baby Name Comparison — 2026

Kay

Boy #6,417 Most Popular 1 Syllable

"rejoice; pure"

Origin: Latin

English American Welsh

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Kay Rank #6,417

Callister Rank #43,579

Kay is more popular, ranked #6417 vs #43579 for Callister.

Is Kay or Callister more popular?

Kay is more popular, ranked #6417 compared to Callister at #43579 in the United States.

What do Kay and Callister mean?

Kay means "rejoice; pure" (Latin origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Kay and Callister boy or girl names?

Kay is primarily a boy name. Callister is primarily a boy name.