Mount Thielsen Wilderness
| Mount Thielsen Wilderness | |
|---|---|
Mount Thielsen in October | |
| Location | Klamath / Douglas counties, Oregon, United States Deschutes / Umpqua / Fremont–Winema national forests |
| Nearest city | Chemult, Oregon |
| Coordinates | 43°12′30″N 122°00′45″W / 43.20833°N 122.01250°W |
| Area | 55,100 acres (22,300 ha) |
| Established | 1984 |
| Governing body | United States Forest Service |
The Mount Thielsen Wilderness is a wilderness area located on and around Mount Thielsen in the southern Cascade Range of Oregon in the United States. It is located within the Deschutes, Umpqua, and Fremont–Winema national forests. It was established by the United States Congress in 1984 and comprises 55,100 acres (22,300 ha).