Ibex Peak is a 7,676-foot mountain in northwestern Montana, about 15 miles southwest of Libby in the Cabinet Mountains Wilderness. West of the Continental Divide, it stands in the Cabinet Mountains, a subrange of the Rockies, on land managed by Kaniksu National Forest. It ranks as the eighth-highest summit in its range and the ninth-highest in Sanders County. Its most striking feature is its steep relief, rising about 4,600 feet above the Middle Fork Bull River in just 1.25 miles. Runoff drains into Bull River tributaries, and the peak is marked by a subarctic climate with severe winters and cool to mild summers.