Moose Mountain is an 8-mile (13 km)-long ridge located in the eastern part of the town of Hanover in Grafton County, New Hampshire.

[6][7] The mountain lies entirely within the Connecticut River watershed, with runoff flowing ultimately to Long Island Sound.

The north end of the mountain drains into Hewes Brook, which enters the Connecticut River in Lyme, and most of the western side of the ridge drains into Mink Brook, a tributary of the Connecticut that flows through Hanover.

Goose Pond is a large lake that sits to the east of Moose Mountain.

Northeast Airlines Flight 946 crashed into the side of Moose Mountain in 1968, resulting in the deaths of 32 passengers and crew.