Katahdin Woods and Waters National Monument Access Act This bill modifies the boundaries of the Katahdin Woods and Waters National Monument in Maine. The boundaries of the monument shall be the boundaries depicted on the map titled Katahdin Woods and Waters National Monument Proposed Boundary Revision and dated July 2022. The Department of the Interior may acquire, by purchase from a willing seller, donation, or exchange (1) land and interests in land within the boundary of the monument, and (2) land and interests in land for access into the monument from roads and communities adjacent to or in the vicinity of the monument. Nothing in this bill authorizes the use of eminent domain to acquire land or an interest in land. Any land added to the monument shall be managed to preserve existing hunting, fishing, and snowmobile uses. The bill allows for the gathering by hand of fiddlehead ferns in the monument for personal use and consumption by the general public.