Hells Gate Rapids is a notable whitewater feature on the Waioweka River in the North Island of New Zealand. It sits approximately 100 metres downstream of the Waiata Bridge and is easily identified by a cluster of large boulders.

Rated Grade III, the rapid presents a series of holes and big rocks requiring careful navigation. The right line is generally considered the preferred route, though paddlers seeking a greater challenge may opt for the left.

Scouting is possible from the right bank. The surrounding stretch of the Waioweka has a wilderness feel despite running alongside a road.