Gex or GEX may refer to:
People Amélie Gex (1835–1883), French writer and poet Émilie Gex-Fabry (born 1986), Swiss ski mountaineer, biologist, and botanist John Peter De Gex (1809–1887), English barrister and law reporter Walter J. Gex III (1939–2020), American judge
Places Gex, a commune in Ain, Auvergne-Rhône-Alpes, France Arrondissement of Gex, Ain department, France Canton of Gex, Ain department, France Le Colomby de Gex, a summit in the French Jura Mountains Gex Land (French: pays de Gex), a historical region of the Duchy of Savoy, in modern France and Switzerland
Other uses Gex (series), a video game series by Crystal Dynamics Gex (video game) Gex: Enter the Gecko Gex 3: Deep Cover Gecko Bleu de Gex, a type of cheese Garre language, with ISO 639-3 code "gex" Geelong Airport in Victoria, Australia, with IATA code GEX Geometry Expert (GEX), Chinese geometry theorem software German Entrepreneurial Index (GEX), a German stock market index