Ioannis "Gaga" Gagaloudis (alternate spellings: Yannis, Giannis, Gagaloudes, Gkagkaloudis) (; born August 22, 1978) is a Greek professional basketball player. He is 1.92 m (6 ft 3¾ in) tall and 86 kg (190 lbs.) in weight. Born in Athens, Greece, he can play at both the point guard and shooting guard positions.