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