Osian is a moderately popular boys' name in England & Wales, ranking #274 in 2025 with 165 recorded births. The name reached its all-time peak in 2022 with 178 births ranking #264. Since 1996, the popularity has increased by 511.1%. In 2025, approximately 1 in every 1,648 boys born was named Osian. STABLE Recent data shows the name is currently stable.
Osian is a Welsh name usually connected with the idea of a little deer. It feels lyrical, gentle, and rooted in Celtic tradition.
The name is closely linked to the Irish Oisin and has become increasingly visible in Wales and beyond. Its rise reflects renewed interest in distinctly Welsh names that still feel easy to say.