Fiddler's Island is an island in the River Thames at Oxford in England. It is situated south of Port Meadow on the reach above Osney Lock.
The thin island sits between the Thames and Castle Mill Stream. On the south of the island a short stream known as the Sheepwash Channel[1] divides the island from the larger island historically known as Osney. The island has a row of trees along it and the Thames Path runs the length of it. On the Castle Mill Stream side there is extensive mooring. The rainbow shaped Medley Footbridge crosses the main stream of the Thames, a flat iron bridge crosses Castle Mill Stream. A small footbridge takes the Thames Path along the bank towards Osney Bridge.
The Cherwell Valley railway line crosses the length of the island, on its way north from Oxford station.
| Next island upstream | River Thames | Next island downstream |
| - | Fiddler's Island | Osney Island |