Marielys is a distinctive girls' name in United States, ranking #8760 in 2015 with 13 recorded births. The name reached its all-time peak in 2008 with 22 births ranking #6281. Since 1996, the popularity has increased by 116.7%. In 2015, approximately 1 in every 137,281 girls born was named Marielys. FALLING Recent data shows the name is currently falling.