Oswyn \o-sw-yn\ as a boy's name is a variant of Oswin (Old English), and the meaning of Oswyn is "God's friend".

The baby name Oswyn sounds like Aswyn and Oswynn. Other similar baby names are Ostyn, Aswynn, Ostynn, Ostin, Owen, Ossin, Olyn, Orwynn, Osman, Osmin, Osten, Oswinn, Osvin, Owynn and Owin.