Gilan province is one of the 31 provinces of Iran, in the northwest of the country. Its capital is the city of Rasht. The province lies along the Caspian Sea, in Iran's Region 3, west of the province of Mazandaran, east of the province of Ardabil, and north of the provinces of Zanjan and Qazvin. It borders Azerbaijan in the north. The northern section of the province is part of the territory of South Talysh. At the center of the province is Rasht.