Helena Falls is a multi-step waterfall in Fiordland National Park that tumbles down into Doubtful Sound, the largest fiord in New Zealand. The falls are named after Helene Fels (1882–1914), mother of the New Zealand poet Charles Brasch.

Because no road reaches Doubtful Sound directly, the falls are typically accessed by cruise or scenic flight from Manapouri or Te Anau. Once at Deep Cove, the Department of Conservation's Helena Falls Track offers a 1. 9 km return walk.

From the Deep Cove Hostel, the route crosses the Lyvia River bridge and follows a loop of roughly 45 minutes over undulating terrain to the stream at the waterfall's base. Rocks can be slippery when wet, so appropriate footwear is advised.