Roslynn is a distinctive girls' name in United States, ranking #3409 in 2014 with 47 recorded births. The name reached its all-time peak in 2014 with 47 births ranking #3409. Since 1996, the popularity has increased by 370.0%. In 2014, approximately 1 in every 37,999 girls born was named Roslynn. RISING Recent data shows the name is currently rising.