Kathlyn vs Kaelyn

Baby Name Comparison — 2026

Kathlyn

Girl #2,719 Most Popular 2 Syllables

"pure"

Origin: Greek

American English Irish

✓ All Clear

Girl #1,637 Most Popular 3 Syllables

"keeper of the keys; pure"

Origin: Celtic/Irish via Caitlin

American Irish-American

✓ All Clear

Kathlyn Rank #2,719

Kaelyn Rank #1,637

Kaelyn is more popular, ranked #1637 vs #2719 for Kathlyn.

Is Kathlyn or Kaelyn more popular?

Kaelyn is more popular, ranked #1637 compared to Kathlyn at #2719 in the United States.

What do Kathlyn and Kaelyn mean?

Kathlyn means "pure" (Greek origin). Kaelyn means "keeper of the keys; pure" (Celtic/Irish via Caitlin origin).

Are Kathlyn and Kaelyn boy or girl names?

Kathlyn is primarily a girl name. Kaelyn is primarily a girl name.