Cathlyn is a distinctive girls' name in United States, ranking #12969 in 1999 with 6 recorded births. The name reached its all-time peak in 2024 with 12 births ranking #8525. Since 1996, the popularity has increased by 20.0%. In 1999, approximately 1 in every 295,630 girls born was named Cathlyn. RISING Recent data shows the name is currently rising.