| Static Image: | File:Bush Eyot upstream side (Nancy).JPG |
| Static Image Caption: | Bush Ait (upstream side) showing entrance to Clewer Mill Stream |
| Country: | England |
| Lieutenancy England: | Berkshire |
| Region: | South East England |
| Coordinates: | 51.4874°N -0.6483°W |
Bush Ait is an island of Clewer, Berkshire in the Thames on the reach above Boveney Lock at the mouth of the Clewer Mill Stream which leads to Windsor Racecourse Marina.[1] The island is unpopulated and wooded.[2]