Gregory vs Callister

Baby Name Comparison — 2026

Gregory

Boy #538 Most Popular 3 Syllables

"watchful, vigilant, alert"

Origin: Greek

English Greek Roman Catholic Eastern Orthodox

✓ All Clear

Boy #43,579 Most Popular 3 Syllables

"defender of men"

Origin: Greek via Gaelic

Scottish Manx Irish

✓ All Clear

Gregory Rank #538

Callister Rank #43,579

Gregory is more popular, ranked #538 vs #43579 for Callister.

Is Gregory or Callister more popular?

Gregory is more popular, ranked #538 compared to Callister at #43579 in the United States.

What do Gregory and Callister mean?

Gregory means "watchful, vigilant, alert" (Greek origin). Callister means "defender of men" (Greek via Gaelic origin).

Are Gregory and Callister boy or girl names?

Gregory is primarily a boy name. Callister is primarily a boy name.