Oisin is a distinctive boys' name in England & Wales, ranking #677 in 2015 with 50 recorded births. The name reached its all-time peak in 2021 with 96 births ranking #433. Since 1996, the popularity has increased by 257.1%. In 2015, approximately 1 in every 6,665 boys born was named Oisin. RISING Recent data shows the name is currently rising.