The River Yox is a river in the English county of Suffolk. It flows from the west of Peasenhall through Sibton and Yoxford where it becomes the Minsmere River.[1] The Yox was originally fordable at Yoxford where a modern road bridge allows the A12 to cross the river.[2]
The river valley is largely drained and used as grassland with some arable use at Sibton. Some peat deposits are present. The valley has a narrow floodplain with water meadows and has largely been drained using a system of dykes.[2][3]