The Nubble, also known as Nubble Peak, The Peak Above The Nubble or Unnamed Peak, is a mountain located in Grafton County, New Hampshire. The mountain is part of the Twin Range of the White Mountains. A small rock outcrop on its northern ridge is also known as The Nubble, and is shown on maps as Haystack Mountain. Nubble Peak is flanked to the south by North Twin Mountain and to the northwest by Haystack Mountain. The mountain is officially trailless and is one of New England's hundred highest summits.
Nubble Peak stands within the watershed of the Ammonoosuc River, which drains into the upper Connecticut River, and into Long Island Sound in Connecticut. The east and southeast faces of Nubble Peak drain into the Little River, thence into the Ammonoosuc River. The northwest side of Nubble Peak drains into Haystack Brook, thence into the Ammonoosuc. The southwest end of Nubble Peak drains to the North Branch of the Gale River, another tributary of the Ammonoosuc River.