Tordera is a city in the comarca of Maresme, province of Barcelona, Catalonia, Spain, situated 64 km from Barcelona and 36 km from Girona on the edge of the Montnegre natural park. Its population as of 2010 was 15,641. The economy used to be based on agriculture, especially cork production, but has diversified into textile manufacturing and construction. The Tordera River flows through the town.