Inniss \i-nni-ss\ as a boy's name is a variant of Innis (Scottish, Gaelic), and the meaning of Inniss is "island".
The baby name Inniss sounds like Inness, Enneiss, Ennis and Innes. Other similar baby names are Enneis, Enneas, Denis, Dennis, Denies, Ennes, Hanss, Inigo, Ilias, Indio, Ioanis, Isais, Ioannis, Junius, Tannis, Yannis and Zenios.