Cortlyn is a distinctive girls' name in United States, ranking #7393 in 2014 with 16 recorded births. The name reached its all-time peak in 2006 with 21 births ranking #6184. Since 1996, the popularity has increased by 14.3%. In 2014, approximately 1 in every 111,621 girls born was named Cortlyn. FALLING Recent data shows the name is currently falling.