Mildred Point. On the southwest slope, overlooking the foot of Kautz Glacier. Origin of name not ascertained.
Mineral Mountain. On the north-central slope of the mountain, overlooking Mystic Lake. The name tells the hopes of early prospectors who worked there before the National Park was created.
Mirror Lakes. On the southwestern slope of the mountain, in Indian Henrys Hunting Ground.
Mist Park. In the northwestern portion of the Park, on the shoulders of Mother Mountain. Elevation, 6,000 feet above sea level. This park is also known as Cataract Basin.
Moraine Park. On the northern slope, bordering Carbon Glacier. It was named by Professor I. C. Russell.
Mosquito Flat. In the north-central portion of the Park, near Lakes James and Ethel. The name indicates that the place was first visited at an unfortunate season. Elevation, 4,400 feet above sea level.
Mother Mountain. An extensive ridge in the northwestern portion of the Park. The name came from the figure of a woman in the rock on the northeastern summit of the ridge clearly seen silhouetted against the sky by those traveling on the Carbon River trail. Elevation, 6,540 feet above sea level.
Mount Ararat. On the southwest slope, overlooking Indian Henrys Hunting Ground. Ben Longmire writes: "I named it because I found there some long slabs of wood that had turned to stone and I thought they might have been part of old Noah's boat. I also found a stump with a ring around it as if his rope might have been tied there. It was all stone." Elevation, 5,996 feet above sea level.
Mount Fremont. In the northern portion of the Park at the western extremity of Sourdough Mountains. The origin of the name has not been ascertained. Elevation, 7,300 feet above sea level.
Mount Pleasant. In the northwestern portion of the Park, overlooking Mist and Spray Parks.