Chenega Island is an island of Aleuts in Prince William Sound in the U.S. state of Alaska.It is the traditional home to the community of Chenega, though much of its population eventually migrated to Chenega Bay on nearby Evans Island after the 1964 Good Friday Earthquake and accompanying tsunami. Chenega Island and its surrounding habitat were also heavily impacted by the 1989 Exxon Valdez oil spill.