San Cristóbal de la Polantera is a municipality in the province of León, within the autonomous community of Castile and León, Spain. It lies in the northwestern part of the country, in a region characterised by a continental climate and a landscape of plains and low hills typical of the Leonese countryside.
The municipality is small and rural in character. According to the 2022 census conducted by Spain's National Statistics Institute (INE), it had a population of 653 inhabitants. Like many settlements in this part of Castile and León, it is administered as a single municipality covering the main village and its surrounding area.
Its status as a municipality places it within the local administrative structure of the province of León, one of the nine provinces that make up the autonomous community of Castile and León. The town's official name, San Cristóbal de la Polantera, distinguishes it from other places in Spain that share the name San Cristóbal.