The Buckinghamshire Junction Railway, often known as the Yarnton Loop, was a standard gauge railway between Buckingham Junction on the Oxford, Worcester and Wolverhampton Railway (OW&WR) and Oxford Road Junction on the Buckinghamshire Railway. It was opened on 1 April 1854 to enable OW&W trains to and from Wolverhampton to connect with London and North Western Railway trains to and from London Euston.