Boceguillas is a municipality in the province of Segovia, within the autonomous community of Castile and León, Spain. It lies in the northern part of the province, in the region of Castile that borders the province of Burgos.
According to the 2004 census conducted by Spain's National Statistics Institute (INE), the municipality had a population of 649 inhabitants. The town is situated along the N-110 road, a route that crosses the province of Segovia and connects it with neighbouring areas to the north.
Like many small municipalities in rural Castile and León, Boceguillas is characterised by its modest size and its setting in the sparse, open landscape typical of the region. The surrounding area is largely agricultural, and the town serves as a local administrative centre for its residents.