Şile is a city and district in Istanbul, Turkey. The district of Şile is part of Istanbul Province, and the municipality of Şile is part of Istanbul Metropolitan Municipality. Bordering Şile is the province of Kocaeli (districts of Gebze, Körfez, Derince, Kandıra) to the east and south, and Istanbul districts of Pendik to the south, Çekmeköy to the southwest, and Beykoz to the west.