Hells Gate is an abrupt narrowing of British Columbia's Fraser River, located in the southern Fraser Canyon. The towering rock walls of the Fraser River plunge toward each other forcing the waters through a passage only 115  feet wide. It is also the name of the rural locality at the same location.

For centuries the narrow passage has been a popular fishing ground for Aboriginal communities in the area. European settlers also began to congregate there in the summer months to fish. Eventually the Fraser Canyon became a route used by gold rush miners wishing to access the upper Fraser gold-bearing bars and the upper country beyond up the Fraser and the Thompson. In the 1880s the Canadian Pacific Railway (CPR) built a transcontinental railroad that passed along the bank at Hells Gate, and in 1911 the Canadian Northern Railway (CNR) began constructing a second track. In 1914 a large rock slide triggered by CNR construction fell into the river at Hells Gate, obstructing the passage of Pacific salmon needing to swim upstream to spawn. Salmon had difficulty passing through the now swifter water, and were appearing in increased numbers downstream below the Hells Gate passage and in tributary rivers and streams that they had not inhabited before. In the winter of 1914 debris removal began, and in 1915 the river was pronounced clear.

The fishways at Hells Gate became a tourist attraction in the 1970s. Among the attractions for tourists are the Airtram, food outlets, observation decks and an educational fisheries exhibit.

The name Hells Gate was derived from the journal of explorer Simon Fraser, who in 1808 described this narrow passage as "a place where no human should venture, for surely these are the gates of Hell."

Long before the arrival of Simon Fraser, and as early as the end of the last ice age, Hells Gate was a First Nations congregation ground for settlement and salmon fishing. During the last deglaciation 4000 to 6000 years ago, long tongues of ice formed wedges and dams in the river's basin above the canyon, resulting in the formation of large reservoirs and new lakes, creating optimal spawning grounds for salmon. During this inter-glacial period, salmon began to populate the Fraser River and used Hells Gate passage as their route to upstream spawning grounds. Constricted by two steep sub-vertical granodiorite walls, the incredibly narrow passage and high water velocity made this part of the upstream journey extraordinarily difficult for salmon, and they would hover along the shores of the river or rest in its back-eddies. As a result, Hells Gate’s geology provided the Indigenous fishers with superb opportunities to readily catch salmon congregated at the river’s edge attempting to elude the strong currents and rough waters. Hells Gate became one of the most popular fishing stations along the Fraser River. Standing on adjacent rocks or on specially constructed wooden platforms extending from surrounding cliffs, fishermen would use long dip nets to snatch the salmon. After Simon Fraser charted the river in the early nineteenth century, it became (and Hells Gate with it) an established corridor between the Pacific Ocean and the interior of what was to become British Columbia. Yet, as Fraser first noted, safe water transportation through the 115 foot wide opening at Hells Gate has proven virtually impossible.