Cropston Reservoir (originally known as Bradgate Reservoir) lies in Charnwood Forest in Leicestershire, England. The dam and associated water works are in Cropston, while the bulk of the reservoir is in the neighbouring Newtown Linford parish. It was opened in May 1871 in a corner of Bradgate Park, a large expanse of open land northwest of Leicester. It is part of the Bradgate Park and Cropston Reservoir Site of Special Scientific Interest.
London-based consulting engineer Thomas Hawksley was appointed by the Leicester Waterworks Company in 1865 to carry out the surveying work. In September 1867, of land adjacent to the deer park at Bradgate Park was purchased from the Earl of Stamford for a cost of £24,000. A stone wall was built by George Rudkin around the boundary to separate the deer park from the reservoir, at a cost of 8s 10d per yard. The dam is long and rises to a height of at its highest point, which gives a depth of water of . The cost of the dam was £41,356 and the reservoir £8,500 with the contract being awarded to Benton & Woodiwiss of Derby. The reservoir was completed in 1870.
thumb|left|Cropston Reservoir viewed from Bradgate Park