Kaelyn vs Kathlyn

Baby Name Comparison — 2026

Kaelyn

Girl #1,637 Most Popular 3 Syllables

"keeper of the keys; pure"

Origin: Celtic/Irish via Caitlin

American Irish-American

✓ All Clear

Girl #2,719 Most Popular 2 Syllables

"pure"

Origin: Greek

American English Irish

✓ All Clear

Kaelyn Rank #1,637

Kathlyn Rank #2,719

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

Is Kaelyn or Kathlyn more popular?

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

What do Kaelyn and Kathlyn mean?

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

Are Kaelyn and Kathlyn boy or girl names?

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