The Sorraia River, or Rio Sorraia, is a river in Santarém District, Portugal. It forms at the confluence of the Sor and Raia, near the town of Couço. Having a basin of 7,556 square kilometres, it flows for 60 kilometres, joining the Tagus near Murteira. Along its length it receives the Divor, and, almost at the mouth, the Almançor.