Callister vs Rook

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 #2,371 Most Popular 1 Syllable

"a crow-like black bird"

Origin: Old Norse

English American

✓ All Clear

Callister Rank #43,579

Rook Rank #2,371

Rook is more popular, ranked #2371 vs #43579 for Callister.

Is Callister or Rook more popular?

Rook is more popular, ranked #2371 compared to Callister at #43579 in the United States.

What do Callister and Rook mean?

Callister means "defender of men" (Greek via Gaelic origin). Rook means "a crow-like black bird" (Old Norse origin).

Are Callister and Rook boy or girl names?

Callister is primarily a boy name. Rook is primarily a boy name.