Sajazarra is a village and municipality in the province and autonomous community of La Rioja, in northern Spain. It lies within the Ebro Valley region of La Rioja, an area known for its wine production.
The municipality covers an area of 13.84 square kilometres (5.34 square miles). As of 2011, it had a population of 137 people, making it one of the smaller and more sparsely populated settlements in the region.