Chamcook Mountain, Mountain summit and viewpoint in Charlotte County, New Brunswick, Canada.

Chamcook Mountain is a hill in Charlotte County, New Brunswick, about 7.4 km from St. Andrews, with a summit 194 m above sea level. Ice sheets once ground over the whole hill, leaving the top scored and polished. It stands beside Chamcook Lake, and the sea lies close to the southeast.

The mountain takes its name from a word in the Passamaquoddy indigenous language, spoken by people who lived in this region long before European settlement. This name reflects the deep historical connection of the place to the first peoples of New Brunswick.

Chamcook takes its name from the Passamaquoddy word K'tchumcook, which William Francis Ganong recorded as having many possible meanings, none of them certain. The summit itself, 637 feet above sea level, is scored and polished by ice, so the rock surface is the main thing to look at.

Chamcook Mountain stands 4.6 miles (7.4 km) from St. Andrews, and its 637-foot (194 m) summit is the highest point in the area. The nearest larger settlement is St. Stephen, 17.7 km to the west, and Chamcook Lake lies at the foot of the mountain. The terrain around the summit is flat and the sea is close to the southeast.

The mountain's surface bears clear marks from glacial activity in past ice ages, documented in the rock formations. These markings tell the story of how massive ice sheets once shaped this landscape.