Mount Tecumseh is a mountain located in Grafton County, New Hampshire. The mountain is named after the Shawnee leader Tecumseh (c.1768–1813), and is part of the Sandwich Range of the White Mountains. The east side of Tecumseh drains into the Mad River; the west side drains into several brooks. All are tributaries of the Pemigewasset River, which drains into the Merrimack River and thence into the Gulf of Maine in Massachusetts.
Mount Tecumseh is the site of the Waterville Valley Resort, one of the largest ski areas in New Hampshire.
At 4,003 feet in height, Mt. Tecumseh is the lowest on the Appalachian Mountain Club list of "four-thousand footers".