Boñar is a municipality in the province of León, in the autonomous community of Castile and León, Spain. It lies in the northern part of the province, in the mountainous terrain of the Cantabrian region of León.
According to the 2010 census (INE), the municipality had a population of 2,085 inhabitants, with almost all residents living in the main town of Boñar itself. Besides the town, the municipality includes the villages of Adrados, Barrio de las Ollas, Las Bodas, Cerecedo, Colle, Llama, Felechas, Grandoso, Orones, Oville, Poblado del Pantano, Remellán, Rucayo, Valdecastillo, Valdehuesa, La Vega de Boñar, Veneros, Vozmediano, and Voznuevo.
Most of the surrounding villages within the municipality have between 10 and 30 permanent residents, while some of the larger villages have up to 250 inhabitants. This pattern reflects the concentration of the municipal population in the main town and the small size of the outlying settlements.