Waterville Valley is a New England town in Grafton County, New Hampshire, United States. The population was 508 at the 2020 census, up from 247 at the 2010 census.

Waterville Valley is a ski resort in Waterville Valley, New Hampshire, United States. It is located within the White Mountain National Forest. Built on Mount Tecumseh, with a summit elevation of 3,997 feet (1,218 m) above sea level, the ski trails extend to a high point on the south ridge of the mountain at 3,840 feet (1,170 m), offering a vertical drop of 2,020 feet (615 m). The ski area has 11 lifts, including two high-speed quads and the slopes primarily face east and northeast.