Alexandra Falls, Waterfall in Northwest Territories, Canada

Alexandra Falls is a 32 m (105 ft) waterfall on the Hay River in the Northwest Territories, the third highest in the territory. It forms part of Twin Falls Gorge Territorial Park, and a 3 km trail links its day-use area to Louise Falls, the second of the Twin Falls, a 15 m drop. The falls lie on the Mackenzie Highway about 10 km southwest of Enterprise and 43 km southwest of Hay River.

Alexandra Falls lies on the Hay River in Twin Falls Gorge Territorial Park, about 10 km southwest of Enterprise on the Mackenzie Highway. At 32 m it is the third-highest waterfall in the Northwest Territories. Its Dene name is Hatto deh Naili, and Dene lore treats it and nearby Louise Falls as the spirits Grandmother and Grandfather guarding the area.

Dene lore names the two falls of the gorge as Grandmother and Grandfather, spirits who protect the area; Alexandra Falls is one of this pair, with Louise Falls as the second. The Slavey name for the falls is Hatto deh Naili.

A large parking area and day-use facilities with picnic tables make visiting straightforward and comfortable. A three-kilometer trail connects to Louise Falls nearby and passes through forested terrain.

Two kayakers have run the whole 32-metre drop: Ed Lucero and Tyler Bradt. The Slavey name of the falls is Hatto deh Naili, a detail many visitors never see on the highway signs.