Portosín is a town in the municipality of Porto do Son in A Coruña, Galicia. It is located in the Ría de Muros y Noia.

It is a small fishing village with charm that has the Real Club Nautico de Portosín, important focus of tourism within the municipality.

Do not miss the famous squid sandwiches or the octopus and cockle rations of the Ria.