Callister vs Harold

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 #991 Most Popular 2 Syllables

"army ruler, power of the army"

Origin: Old English

English Scandinavian American

✓ All Clear

Callister Rank #43,579

Harold Rank #991

Harold is more popular, ranked #991 vs #43579 for Callister.

Is Callister or Harold more popular?

Harold is more popular, ranked #991 compared to Callister at #43579 in the United States.

What do Callister and Harold mean?

Callister means "defender of men" (Greek via Gaelic origin). Harold means "army ruler, power of the army" (Old English origin).

Are Callister and Harold boy or girl names?

Callister is primarily a boy name. Harold is primarily a boy name.