Ribadesella (Asturian: Ribeseya) is a small 84-square-kilometre (32 sq mi) municipality in the Autonomous Community of the Principality of Asturias, Spain.

Known for its location on the Cantabrian Sea, at the outlet of the River Sella, Ribadesella is a town that forms part of the Picos de Europa (Peaks of Europe).

It is bordered on the east by Llanes, on the south by Cangas de Onís and Parres, and on the west by Caravia.

Here also is the Casco Antiguo, where the old plaza is located, as well as Ribadesella's church: the Iglesia Parroquial de Sta.

Processions take place daily, and a great celebration, including a horse race/spectacular on the Santa Marina beach is held each year.