Dordogne, department (1990 pop. 387,500), SW France. Périgueux is the capital; Bergerac the other chief town. There are many prehistoric sites in the department.

Dordogne, river, c.305 mi (490 km) long, rising near the Puy de Sancy in the Auvergne Mts., S central France. It flows southwest to join the Garonne River N of Bordeaux and to form the Gironde. The upper and middle Dordogne valley has become a popular tourist attraction. There are famous vineyards along the river's lower course.