Oisín (pronounced [əˈʃiːnʲ, ˈɔʃiːnʲ], approximately USH-een) is an Irish male given name; meaning "fawn" or "little deer", derived from the Irish word os ("deer") + -ín (diminutive suffix).
It is sometimes anglicized as Osheen (/ɒˈʃiːn/ OSH-een) or spelt without the acute accent (fada), as Oisin.
Variants in other languages include Scottish Gaelic: Oisean (pronounced [ˈɔʃan]), Welsh: Osian and English: Ossian.