Cassidy vs Rook

Baby Name Comparison — 2026

Cassidy

Boy #2,323 Most Popular 3 Syllables

"curly-haired"

Origin: Irish Gaelic

Irish American English

✓ All Clear

Boy #2,371 Most Popular 1 Syllable

"a crow-like black bird"

Origin: Old Norse

English American

✓ All Clear

Cassidy Rank #2,323

Rook Rank #2,371

Cassidy is more popular, ranked #2323 vs #2371 for Rook.

Is Cassidy or Rook more popular?

Cassidy is more popular, ranked #2323 compared to Rook at #2371 in the United States.

What do Cassidy and Rook mean?

Cassidy means "curly-haired" (Irish Gaelic origin). Rook means "a crow-like black bird" (Old Norse origin).

Are Cassidy and Rook boy or girl names?

Cassidy is primarily a boy name. Rook is primarily a boy name.