Wunnummin Lake is a remote freshwater lake in the Kenora District of northwestern Ontario, situated within the traditional territory of a Cree, Ojibway, and Oji-Cree First Nation community of approximately 590 residents. The lake's name derives from the Oji-Cree word Wanaman-zaaga'igan, meaning "Vermillion Lake," a reference to the vermillion-colored clay found along its shores.

Access to the lake is primarily by float plane, with Pickle Lake serving as the typical departure point for fly-in visitors. There is no all-weather road into the community; a seasonal winter road provides the only land-based connection. The nearest major city is Winnipeg, approximately 623 kilometres away. Given this extreme remoteness, paddlers should plan accordingly for self-sufficiency and emergency preparedness.

The shoreline reflects classic Canadian Shield character, ranging from rocky outcrops to occasional small sandy stretches. The lake supports populations of walleye and northern pike. Wunnummin Lake also serves as a traditional access point for Pipestone River Provincial Park, making it a potential staging area for paddlers looking to explore the broader river system.

A Backroad Mapbooks topographic map (Map77) covering the Wunnummin Lake area is available digitally through the Avenza Maps platform, which can be useful for route planning. The Ontario Breeding Bird Atlas has documented canoe-based travel on the lake, with one documented trip spanning 10 days. Given the fly-in access and the presence of an active First Nation community, paddlers should be respectful of local land use and community protocols when visiting the area.