Callister vs Greg

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 #4,526 Most Popular 1 Syllable

"watchful, alert"

Origin: Greek

English American European

✓ All Clear

Callister Rank #43,579

Greg Rank #4,526

Greg is more popular, ranked #4526 vs #43579 for Callister.

Is Callister or Greg more popular?

Greg is more popular, ranked #4526 compared to Callister at #43579 in the United States.

What do Callister and Greg mean?

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

Are Callister and Greg boy or girl names?

Callister is primarily a boy name. Greg is primarily a boy name.