Vasileios Ioannidis (Greek: Βασίλειος Ιωαννίδης; 1896 – 25 November 1963) was a Greek theologian and professor. His research was focused on the analysis and the understanding (hermeneutics) of the New Testament. Ioannidis participated in the first three Assemblies of the World Council of Churches (1947, 1955, and 1961) and was involved in the movement of Ecumenism.