Gergis () may refer to the following:
Places in Africa Gergis, Libya, an ancient city and former bishopric in Libya, now called Zargis and remaining a Latin Catholic titular see as Gergis Gergis, Tunisia, an ancient city in Tunisia, now called Zarzis
in Asia Gergis (Troad), a place from Antiquity on Mount Ida in the Troad, present-day northwest Anatolia (Turkey)
People Gergis, son of Ariazus, a Persian general in Xerxes army Joëlle Gergis, climate scientist