Kay vs Brook

Baby Name Comparison — 2026

Kay

Boy #6,417 Most Popular 1 Syllable

"rejoice; pure"

Origin: Latin

English American Welsh

✓ All Clear

Boy #6,381 Most Popular 1 Syllable

"small stream, flowing water"

Origin: Old English

English American

✓ All Clear

Kay Rank #6,417

Brook Rank #6,381

Brook is more popular, ranked #6381 vs #6417 for Kay.

Is Kay or Brook more popular?

Brook is more popular, ranked #6381 compared to Kay at #6417 in the United States.

What do Kay and Brook mean?

Kay means "rejoice; pure" (Latin origin). Brook means "small stream, flowing water" (Old English origin).

Are Kay and Brook boy or girl names?

Kay is primarily a boy name. Brook is primarily a boy name.