The Sandy River is a tributary of the Kennebec River in the U.S. state of Maine.
The Sandy River originates in the Sandy River Ponds () at an elevation of in Sandy River Plantation. The river flows south to a confluence with Chandler Mill Stream in Maine Township E and then easterly to its confluence with Saddleback Stream in Madrid, and Orbeton Stream in Phillips. The river then flows southeasterly through the villages of Phillips and Strong. The river flows south from Strong to Farmington and flows northeasterly from Farmington Falls through New Sharon to discharge into the Kennebec River in Norridgewock a short distance south of the Madison town line. Maine State Route 4 follows the river from the Sandy River Ponds and bridges it at Strong along the way to Farmington, where it is again bridged. The river is bridged once more at Farmington by U.S. Route 2. Route 2 follows the river downstream to New Sharon where it makes the last bridged crossing of the river befo