The Mitchell Bay Shelter Lookout/Cabin is a historic backcountry shelter in the Admiralty Island National Monument, part of the Tongass National Forest in Southeast Alaska. It is one of a number of such facilities built by Civilian Conservation Corps (CCC) on the Admiralty Island Canoe Route between 1933 and 1937. This cabin, a three-sided Adirondack-style log structure with shake walls and roof, was built in 1936. The cabin, situated overlooking a tidal flat near the head of Mitchell Bay on the west side of the island, continues to be maintained by the Forest Service.