Talesh County (Persian: شهرستان تالش; also known as Tavalesh is in Gilan province, in northwestern Iran. Its capital is the city of Tālesh.

Gilan Province is one of the 31 provinces of Iran, in the northwest of the country. It 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.