Santa Coloma 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 north of the country.
The municipality covers an area of 20.24 square kilometres (7.81 square miles). As of 2011, it had a population of 127 people, making it a very small and sparsely populated settlement.
Its most notable characteristics are its small size and low population density, with the entire municipal territory home to only around a hundred residents. Like other municipalities in La Rioja, it is administered as a local entity within the province and autonomous community framework of Spain.