Ioanis \io(a)-nis\ as a boy's name is of Russian and Hebrew origin, and the meaning of Ioanis is "God is gracious". Variant of John.

Baby names that sound like Ioanis are Ioannis, Innis and Ioannes. Other similar baby names are Isais, Fons, Ennis, Teunis, Denis, Dennis, Ion, Hans, Hanss, Hanns, Ian, Iain, Inacio, Inniss, Innes, Isaia, Janos, Janus, Joannes, Giannis, Jonas, Jones, Leonis, Manus, Pons, Tannis, Yannis and Yonas.