There are at least 6 named mountains in Sheridan County, Montana.
- Brush Mountain, 48°28′26″N 104°05′02″W / 48.47389°N 104.08389°W / 48.47389; -104.08389 (Brush Mountain), el. 2,205 feet (672 m)[1]
- Flagstaff Hill, 48°31′54″N 104°44′11″W / 48.53167°N 104.73639°W / 48.53167; -104.73639 (Flagstaff Hill), el. 2,523 feet (769 m)[2]
- Kisler Butte, 48°43′08″N 104°44′09″W / 48.71889°N 104.73583°W / 48.71889; -104.73583 (Kisler Butte), el. 2,648 feet (807 m)[3]
- Sand Butte, location unknown, el. 2,238 feet (682 m)[4]
- Sand Hills, location unknown, el. 2,238 feet (682 m)[5]
- Umbrights Hill, 48°29′49″N 104°23′35″W / 48.49694°N 104.39306°W / 48.49694; -104.39306 (Umbrights Hill), el. 1,991 feet (607 m)[6]