Rosselyn is a distinctive girls' name in United States, ranking #10275 in 2003 with 10 recorded births. This places Rosselyn in the bottom 44% of ranked US girls' names for the year. Its actual usage is classified as Rare. The name reached its all-time peak in 2005 with 27 births ranking #4935. In 2003, approximately 1 in every 182,705 girls born was named Rosselyn. FALLING Recent data shows the name is currently falling.