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