Roisin is a distinctive girls' name in England & Wales, ranking #808 in 2017 with 48 recorded births. The name reached its all-time peak in 1997 with 158 births ranking #247. Since 1996, the popularity has decreased by 64.2%. In 2017, approximately 1 in every 6,231 girls born was named Roisin. FALLING Recent data shows the name is currently falling.