Hyndburn Brook is a minor river in eastern Lancashire. It is approximately 4.5 miles (7.3 km) long, and has the catchment area (not including the River Hyndburn) of 13.61 square miles (35.243 km2). Thought to begin at the confluence of Tinker Brook and White Ash Brook, to the west of Church, the river runs north. It collects the River Hyndburn just before the bridge of the M65 Motorway and Bottom Syke (from Dunkenhalgh) just afterward, meeting Shaw Brook and Spaw Brook to the east of Rishton.