The River Evenlode is a river in England which is a tributary of the Thames in Oxfordshire. It rises near Moreton-in-Marsh, Gloucestershire in the Cotswold Hills and flows south-east passing near Stow-on-the-Wold, Charlbury, Bladon, and Cassington, and its valley provides the route of the southern part of the Cotswold Line.The River Evenlode passes through many villages and towns in Oxfordshire including Ascott-under-Wychwood, Chadlington and Charlbury.