Priory Preparatory School was a preparatory school in Banstead, Surrey, England, for boys aged two to thirteen years, which was closed in 2017. The school was a member of the Independent Association of Preparatory Schools (IAPS) and of the Independent Schools Council (ISC). It was founded in 1921, and was a charitable trust. Upon closure in 2017, pupils moved to the new Banstead Preparatory School at the site formerly occupied by Greenacre School for Girls. The school's buildings at the old site on Bolters Lane, including the historic mansion known as the Red House were demolished in January 2021 to make way for the development of retirement apartments.