| Old Brook | |
| River | |
| Country | England |
|---|---|
| Source | |
| - location | Crow Knowl |
| Mouth | |
| - location | River Beal |
| - coordinates | |
Old Brook is a small watercourse in Shaw and Crompton in the Metropolitan Borough of Oldham, Greater Manchester which flows from Crow Knowl on Crompton Moor to the River Beal. Its main feature is a waterfall at Pingot Quarry.