Cidamón 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, a small autonomous community in the country's north.
The municipality covers an area of 15.8 square kilometres (6.1 square miles). As of 2011, it had a population of 36 people, making it a very small and sparsely populated settlement.