Oregon Wildlands Act This bill designates specified Bureau of Land Management (BLM) land in Oregon as the Rogue Canyon and Molalla National Recreation Areas. The bill adds specified segments to the Rogue River as components of the National Wild and Scenic Rivers System. Segment lengths and other technical corrections are made to segment designations for the Chetco River, Oregon. The Squaw Creek is renamed as Whychus Creek. The bill designates specified segments of Franklin and Wasson Creeks as wild rivers and components of the Wild and Scenic Rivers System, and the Molalla River as a recreational river and components of such system. Specified segments are added to the Elk River, and specified other river segments are designated as components of such system. The bill adds 59,512 acres of specified federal land to the Wild Rogue Wildernes. The bill designates 30,621 acres of certain Forest Service and BLM land in Oregon as the Devil's Staircase Wilderness and as a component of the National Wilderness Preservation System.