Merlyn is a distinctive girls' name in United States, ranking #6231 in 2003 with 19 recorded births. The name reached its all-time peak in 2008 with 23 births ranking #6073. Since 1996, the popularity has increased by 216.7%. In 2003, approximately 1 in every 96,161 girls born was named Merlyn. FALLING Recent data shows the name is currently falling.