Clavijo is a municipality in the autonomous community of La Rioja, Spain. It lies near the regional capital, Logroño, in the Ebro Valley area of northern Spain.
The municipality is small and rural; its population was recorded as 276 inhabitants in 2009. Like other settlements in La Rioja, it is situated in a region known for its agricultural landscape and wine production.
Clavijo is best known for the Battle of Clavijo, a legendary medieval battle traditionally associated with the site. The battle is tied to the figure of Saint James (Santiago) and the tradition of Santiago Matamoros, and it forms part of the historical and legendary heritage connected with the municipality.