Vilassar de Mar is a municipality in the comarca of the Maresme in Catalonia, Spain. It is situated on the coast between Premià de Mar and Cabrera de Mar, to the north-east of Barcelona. The town is both a tourist centre and a dormitory town for Barcelona, and is also known for its horticulture. The main N-II road and a RENFE railway line run through the town, while a local road connects the municipality with the C-32 autopista at Vilassar de Dalt and Mataró and Barcelona.