Gender masculine Gianni is a Italien form of Greek name Ιωάννης. Synaxis of Prophet Forerunner and Baptist John Feast day January 7 When is Gianni's name day? Gianni's Day is celebrated on January 7 in memory of Synaxis of Prophet Forerunner and Baptist John. Variantes et traductions Τζαννής (el) Famous people named Gianni Gianni InfantinoGianni Pittella Log in or register to post comments Be the first to rate this name Leave this field blank Opens in a new window Opens in a new window Opens in a new window Opens in a new window Opens in a new window Copied to clipboard