The Allegheny River Islands Wilderness is located in the Allegheny National Forest. It comprises seven islands in the Allegheny River, totaling 368 acres (1.49 km2). All are alluvial origin. The islands are located between Buckaloons Recreation Area and Tionesta, Pennsylvania.
The Allegheny River Islands Wilderness was created by Congress in 1984 as part of the National Wilderness Preservation System. It is one of the smallest wilderness areas of the United States.