| East Machias River | |
|---|---|
| Origin | Maine |
| Mouth | Machias River |
| Basin countries | United States |
| Length | 36 miles (58 km) |
| Mouth elevation | sea level |
The East Machias River is a river in Washington County, Maine. From the outlet of Crawford Lake () in Crawford, it runs 35.8 miles (57.6 km)[1] southeast to the estuary of the Machias River at the head of Machias Bay. The river mouth is on the border between the towns of East Machias and Machiasport.