Merlyn is a distinctive girls' name in United States, ranking #5984 in 1998 with 17 recorded births. The name reached its all-time peak in 2008 with 23 births ranking #6073. Since 1996, the popularity has increased by 183.3%. In 1998, approximately 1 in every 103,935 girls born was named Merlyn. FALLING Recent data shows the name is currently falling.