| Country: | England |
| Coordinates: | 52.99°N -2.56°W |
| Official Name: | Barnett Brook |
| Unitary England: | Cheshire East |
| Lieutenancy England: | Cheshire |
| Region: | North West England |
| Os Grid Reference: | SJ6244 |
Barnett Brook is a hamlet in the Newhall and Dodcott cum Wilkesley civil parishes in the Cheshire East area of Cheshire, England. The hamlet is situated around a road bridge carrying Sheppenhall Lane across Barnett Brook, a tributary of the River Weaver. The sandstone bridge dates from the early to mid 19th century and is a grade II listed building.