Kay vs Kaj

Baby Name Comparison — 2026

Kay

Boy #6,417 Most Popular 1 Syllable

"rejoice; pure"

Origin: Latin

English American Welsh

✓ All Clear

Boy #6,083 Most Popular 1 Syllable

"to rejoice"

Origin: Latin (Caius/Gaius)

Danish Swedish Norwegian German

✓ All Clear

Kay Rank #6,417

Kaj Rank #6,083

Kaj is more popular, ranked #6083 vs #6417 for Kay.

Is Kay or Kaj more popular?

Kaj is more popular, ranked #6083 compared to Kay at #6417 in the United States.

What do Kay and Kaj mean?

Kay means "rejoice; pure" (Latin origin). Kaj means "to rejoice" (Latin (Caius/Gaius) origin).

Are Kay and Kaj boy or girl names?

Kay is primarily a boy name. Kaj is primarily a boy name.