| East Brookfield River | |
| Source1 Location: | Lake Lashaway |
| Mouth Location: | Quaboag Pond |
| Discharge1 Avg: | 11.5cuft/s |
| Basin Size: | 15sqmi |
The East Brookfield River is a 2.4adj=midNaNadj=mid[1] river in Massachusetts that heads at Lake Lashaway in East Brookfield at an elevation of above sea level. It continues to Quaboag Pond, at an elevation of .
This river receives its name from East Brookfield, Massachusetts. Via the Quaboag River, it is part of the Chicopee River Watershed.
This river starts at the Lake Lashaway Dam, near State Route 9 and continues through wetlands to Quaboag Pond. Numerous local brooks and streams from the towns of East Brookfield, North Brookfield, and Spencer drain the watershed into Lake Lashaway and the East Brookfield River. About one mile from its mouth at Quaboag Pond, the Seven Mile River joins, draining water from Spencer and surrounding areas.