Callister vs Efren

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 #2,616 Most Popular 2 Syllables

"fertile, productive"

Origin: Hebrew

Spanish Mexican Latin American Filipino

✓ All Clear

Callister Rank #43,579

Efren Rank #2,616

Efren is more popular, ranked #2616 vs #43579 for Callister.

Is Callister or Efren more popular?

Efren is more popular, ranked #2616 compared to Callister at #43579 in the United States.

What do Callister and Efren mean?

Callister means "defender of men" (Greek via Gaelic origin). Efren means "fertile, productive" (Hebrew origin).

Are Callister and Efren boy or girl names?

Callister is primarily a boy name. Efren is primarily a boy name.