Geron may refer to :
- Places and jurisdictions
- Girona, a city in Catalonia
- Curiate Italian name of Hieron, Caria (Asian Turkey), as Latin Catholic titular see in
- Saint-Géron, a commune in France
- Other
- Saint Gereon of Köln
- Geron, an elder (from the Greek "γέρων") of an Orthodox monastery (starets in Russian)
- Geron Corporation, an American biotechnology company
- Geron (fly), a genus of insects in the family Bombyliidae