Akdoğan is a neighborhood in Geyve District, in Sakarya Province, Türkiye. Akdoğan lies at 472 m above sea level, in the Köroğlu mountains. It has 669 inhabitants. The nearest city is Geyve, 9.9 km to the northeast. Among the landmarks around are Sangarius Bridge (36 km), Nicaea (45 km) and Kabia (9.4 km).