The River Devon is a tributary of the River Trent, which rises in Leicestershire and joins the Trent at Newark in Nottinghamshire, England. In its upper reaches, it supplies Knipton Reservoir, which was built to supply water to the Grantham Canal, and Belvoir Lakes, designed by Capability Brown. It passes under the Grantham Canal, and then through Bottesford, where it is spanned by five railway bridges, only one of which is still used for its original purpose. On the outskirts of Newark, it passes by two Civil War structures, and just before it joins the Trent it becomes navigable, with a marina located on the west bank. Its name is pronounced "Deevon", not as spelt.

Leicestershire is a ceremonial county in the East Midlands of England. It is bordered by Derbyshire, Nottinghamshire, and Lincolnshire to the north, Rutland to the east, Northamptonshire to the south-east, Warwickshire to the south-west, and Staffordshire to the west. The city of Leicester is the largest settlement and the county town.