Lake Mackenzie Campsite is a walk-in Great Walk campsite on the Routeburn Track, situated within Fiordland National Park. It offers nine non-powered tent sites set into the bush beside the lake, though camping directly at the lake's edge is not permitted.

Campers must be fully self-sufficient, as access to the adjacent Lake Mackenzie Hut facilities is not allowed. On-site facilities include a cooking shelter, preparation benches with sinks and running water, picnic tables, and long-drop toilets.

Bookings are required during the Great Walks season; outside that period, sites are available on a first-come, first-served basis. No dogs are permitted. Swimming in the lake is allowed, though no chemicals may be used in the water.