Biddlecombe Cascades is a waterfall and swimming area located on Seventeen Mile Creek within Nitmiluk National Park, Northern Territory. It sits approximately 8–8.

5 kilometres from Nitmiluk Gorge and serves as the first campsite on the iconic Jatbula Trail, a one-way long-distance walk that covers roughly 62 kilometres before finishing at Leliyn (Edith Falls).

The waterhole is fed by a permanently flowing creek that drops into a waterfall, with rock pools and rapids above the falls offering excellent swimming.

Hikers typically reach the cascades at the end of day one after ascending the escarpment from the Katherine River, arriving with time to relax in the water before continuing toward Crystal Falls the following morning.

Toilets and an Emergency Call Device are located near the campsites.