Oisin is a distinctive boys' name in England & Wales, ranking #630 in 2024 with 60 recorded births. The name reached its all-time peak in 2021 with 96 births ranking #433. Since 1996, the popularity has increased by 328.6%. In 2024, approximately 1 in every 4,630 boys born was named Oisin. FALLING Recent data shows the name is currently falling.