Oisín (, approximately ) is an Irish male given name; meaning "fawn" or "little deer", derived from the Irish word ("deer") + (diminutive suffix). It is sometimes anglicized as Osheen ( ) or spelt without the acute accent (fada), as Oisin.
Variants in other languages include (), and English: Ossian.
People with the name Oisín, legendary Irish poet Oisín Fagan (born 1973), Irish professional boxer Oisín Gallen, Irish Gaelic footballer Oisín Gough (born 1989), Irish hurler Oisín Kelly (1915–1981), Irish sculptor Oisín Kelly (born 1997), Irish hurler Oisín Mac Diarmada (born 1978), Irish fiddler Oisín McConville (born 1975), Irish Gaelic footballer Oisin McEntee (born 2001), Irish footballer Oisín McGann (born 1973), Irish writer and illustrator Oisín Mullin (born 2000), Irish footballer Oisin Murphy (born 1995), Irish jockey Oisín Quinn (born 1969), Irish politician Oisín Stack, Irish actor
See also List of Irish-language given names