Arenys de Mar is one of the main municipalities of the comarca of Maresme, Barcelona Province, Catalonia, Spain. In 2005, it had a population of 13,860 (INE).

Arenys harbour, for many years the only existing port on the north coast of Barcelona, is the most evident proof of the long history and seafaring tradition of the village. The beaches framed by hills which run right down to the sea, give a preview of the neighbouring Costa Brava.