The Brill Tramway, also known as the Quainton Tramway, Wotton Tramway, Oxford & Aylesbury Tramroad and Metropolitan Railway Brill Branch, was a six-mile (10 km) rail line in the Aylesbury Vale, Buckinghamshire, England. It was privately built in 1871 by the 3rd Duke of Buckingham as a horse tram line to transport goods between his lands around Wotton House and the national railway network. Lobbying from residents of the nearby town of Brill led to the line's extension to Brill and conversion to passenger use in early 1872. Two locomotives were bought for the line, but as it had been designed and built with horses in mind, services were very slow; trains travelled at an average speed of only 4 miles per hour (6.4 km/h).