Cañas is a municipality in the autonomous community of La Rioja, in northern Spain. It is one of the many small towns that make up this wine-producing region in the Ebro valley.
The town is best known as the birthplace of Saint Dominic of Silos, who was born there in 1000 and died in 1073. He is associated with the monastery of Santo Domingo de Silos in neighbouring Castile and León.