Callister vs Gregory

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 #538 Most Popular 3 Syllables

"watchful, vigilant, alert"

Origin: Greek

English Greek Roman Catholic Eastern Orthodox

✓ All Clear

Callister Rank #43,579

Gregory Rank #538

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

Is Callister or Gregory more popular?

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

What do Callister and Gregory mean?

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

Are Callister and Gregory boy or girl names?

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