Gibraltar Islands are a pair of islands in the River Thames in England above Bourne End Railway Bridge on the reach above Cookham Lock, near Cookham Dean, Berkshire.
There is a footbridge to one of the islands which is closely connected to the other. Previously the islands were more numerous little aits on which osiers were grown. There are some houses on the islands. The islands are opposite Quarry Wood on the Berkshire bank which is considered to be the basis for the Wild Woods in The Wind in the Willows. The woods are also referenced by Jerome K. Jerome.
| Next island upstream | River Thames | Next island downstream |
| Temple Mill Island | Gibraltar Islands | Sashes Island |