Oswinn \o-swi-nn, os-winn\ as a boy's name is a variant of Oswin (Old English), and the meaning of Oswinn is "God's friend".

The baby name Oswinn sounds like Aswinn and Oswynn. Other similar baby names are Aswin, Ostynn, Ostin, Ossin, Ossian, Orwin, Osmin, Oswyn, Osvin and Owin.