The North Amuj River (Cadwg: Nwaxu Mwaxa [ˈnwa.ʃɨ ˈmwa.ʃa], Vidish: Nordamijō [ˈnor.da.mi.joː]) is a body of water connected to the Amujan Sea which splits Amujton and Pfoas away from Ongashaw.