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 2004 was 11719.
The economy was formerly based around agriculture, especially cork production, but has diversified into textile manufacturing and construction.
The Tordera River flows through the town.
The Romanesque church of Saint Stephen is situated in the town centre: part of the altar is original, but the rest of the building was renovated in the 16th and 18th centuries.