Callister vs Klay

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 #2,112 Most Popular 1 Syllable

"clay, mortal man"

Origin: Old English

American English

✓ All Clear

Callister Rank #43,579

Klay Rank #2,112

Klay is more popular, ranked #2112 vs #43579 for Callister.

Is Callister or Klay more popular?

Klay is more popular, ranked #2112 compared to Callister at #43579 in the United States.

What do Callister and Klay mean?

Callister means "defender of men" (Greek via Gaelic origin). Klay means "clay, mortal man" (Old English origin).

Are Callister and Klay boy or girl names?

Callister is primarily a boy name. Klay is primarily a boy name.