| Sudden Brook | |
|---|---|
 Sandbrook Park | |
 | |
| Location | |
| Country | England |
| Physical characteristics | |
| Source | |
| • location | Royton |
| Mouth | |
• location | River Roch, Sudden |
• coordinates | 53°36′25.10″N 2°10′46.78″W / 53.6069722°N 2.1796611°W |
Sudden Brook is a watercourse in Greater Manchester and a tributary of the River Roch. It originates in to the north of Royton, Oldham and flows Northwards through Kirkholt and Sandbrook Park to join the River Roch at Sudden.