Geyve is a municipality and district located in the Sakarya Province of Turkey. It serves as the largest district in the province by land area, covering approximately 662 km². As of 2022, the district has a population of 50,799.
The region is situated at the foot of Geyve Gorge, which is positioned between two mountain ranges along the Sakarya River. The area is characterized by an impressive green landscape and productive nature. It is located within driving distance of several major Turkish cities, including Istanbul, Adapazarı, Izmit, Bursa, Eskişehir, and Bolu.