Edna Bay is a census-designated place (CDP) on Kosciusko Island in Prince of Wales-Hyder Census Area, Alaska, United States. The population was 49 at the 2000 census. Edna Bay is one of only two populated towns on Kosciusko Island, the other being Cape Pole, and has both year-round and seasonal residents. Year-round residents are either retired, or work primarily in the fishing and logging industries. Some permanent residents also work seasonally off-island in various industries.
Due to the very remote location of Edna Bay and the subsequent difficulty and expense of traveling between Edna Bay and larger S.E. Alaska communities, subsistence hunting, fishing, and gathering comprise a large portion of the livelihood activities for residents of Edna Bay. Starting in 2008 Edna Bay will also be home to an Engineering and Software Development company, made possible due to the broadband-internet service brought to the community by the State of Alaska and AT&T.