Lumbreras de Cameros is a village and municipality in the province and autonomous community of La Rioja, in northern Spain. It lies within the Cameros comarca, a mountainous area of the Iberian System south of the Ebro valley.
The municipality covers an area of 142.92 square kilometres (55.18 square miles), making it large in extent relative to its population. As of 2011, it had a population of 175 people, reflecting the sparse settlement typical of this part of rural La Rioja.