Rising since 1993, #4,539 for boys today.
Popularity of Oisin since 1991
Babies named Oisin per year in U.S. Social Security records.
Data table (by decade)
| Decade | Boys |
|---|---|
| 1990s | 43 |
| 2000s | 132 |
| 2010s | 181 |
| 2020s | 157 |
Meaning & origin
Oisin entered U.S. birth records in 1991 and reached its peak rank in 2020. As of 2025, it ranked 4,539, meaning about 1 in 77,640 newborn boys received the name that year. The name's trajectory shows a clear upward trend since 1993, reflecting growing interest in Irish heritage names among American parents. Its mythological roots and melodic pronunciation contribute to its appeal, though it remains relatively rare, with no dominant state clusters.
Oisin is derived from the Irish word 'os', meaning 'deer', combined with a diminutive suffix, thus meaning 'little deer'. In Irish mythology, Oisin (also spelled Oisín) was a legendary warrior and poet, the son of Fionn mac Cumhaill and Sadhbh, who was turned into a deer. The name has been used in Ireland for centuries and experienced a revival in the late 20th century.
“Oisin” around the world
Where Oisin lands in the latest official birth statistics abroad, matched to the U.S. spelling.
France
5
babies in 2024
Ireland
#5
in 2025
Sources: INSEE (France) · CSO Ireland (Ireland).
Nicknames & variants
Nicknames: Osh
Variants: Oisín
Sibling names for Oisin
Names that share Oisin's style, for a brother or sister.
