| Middle Santiam Wilderness | |
|---|---|
 A pool in the wilderness | |
  | |
| Location | Linn County, Oregon, U.S. |
| Nearest city | Sweet Home, Oregon |
| Coordinates | 44°34′28.36″N 122°16′38.07″W / 44.5745444°N 122.2772417°W |
| Area | 8,542 acres (3,457 ha) |
| Established | 1984 |
| Governing body | United States Forest Service |
The Middle Santiam Wilderness is a wilderness area located near Mount Washington in the central Cascade Range of Oregon, U.S., within the Willamette National Forest.