The Camesa is a river located in the north of Spain, a tributary of the Pisuerga.

It rises in the province of Palencia in the municipio of Brañosera. It runs briefly through the region of Cantabria, where gives its name to a Site of Community Importance.^[1] After passing through the village of Mataporquera, it leaves Cantabria, joining the river Pisuerga in the vicinity of Aguilar de Campoo, again in Palencia.

42°45′37″N 4°15′13″W / 42.76036°N 4.25366°W / 42.76036; -4.25366