The Dead River is a river in central Maine in the United States. Its source is at Flagstaff Lake, where its two main tributaries, South Branch Dead River and North Branch Dead River join. It flows generally east to join the Kennebec River at the West Forks in The Forks, Maine.

The Dead River is a 3.5 mile long (5.7 km) river located entirely in the city of Berlin in northern New Hampshire in the United States. It is a tributary of the Androscoggin River, which flows south and east into Maine, joining the Kennebec River near the Atlantic Ocean.