Merlyn is a distinctive girls' name in United States, ranking #9321 in 2015 with 12 recorded births. The name reached its all-time peak in 2008 with 23 births ranking #6073. Since 1996, the popularity has increased by 100.0%. In 2015, approximately 1 in every 148,721 girls born was named Merlyn. FALLING Recent data shows the name is currently falling.