There are at least 16 named mountains in Fallon County, Montana.
- Antelope Butte, 46°26′25″N 104°17′34″W / 46.44028°N 104.29278°W / 46.44028; -104.29278 (Antelope Butte), el. 3,186 feet (971 m)[1]
- Bearhorn Butte, 46°12′31″N 104°24′10″W / 46.20861°N 104.40278°W / 46.20861; -104.40278 (Bearhorn Butte), el. 3,553 feet (1,083 m)[2]
- Bracket Butte, 46°16′14″N 104°13′31″W / 46.27056°N 104.22528°W / 46.27056; -104.22528 (Bracket Butte), el. 3,409 feet (1,039 m)[3]
- Cap Rock, 46°37′56″N 104°19′22″W / 46.63222°N 104.32278°W / 46.63222; -104.32278 (Cap Rock), el. 3,222 feet (982 m)[4]
- Cedar Butte, 46°27′19″N 104°08′57″W / 46.45528°N 104.14917°W / 46.45528; -104.14917 (Cedar Butte), el. 3,294 feet (1,004 m)[5]
- Grassy Butte, 46°28′24″N 104°08′37″W / 46.47333°N 104.14361°W / 46.47333; -104.14361 (Grassy Butte), el. 3,409 feet (1,039 m)[6]
- Harmon Butte, 46°14′28″N 104°44′41″W / 46.24111°N 104.74472°W / 46.24111; -104.74472 (Harmon Butte), el. 2,917 feet (889 m)[7]
- Haystack Butte, 46°27′16″N 104°04′00″W / 46.45444°N 104.06667°W / 46.45444; -104.06667 (Haystack Butte), el. 3,117 feet (950 m)[8]
- Monument Butte, 45°58′59″N 104°02′49″W / 45.98306°N 104.04694°W / 45.98306; -104.04694 (Monument Butte), el. 3,179 feet (969 m)[9]
- Morris Butte, 46°24′52″N 104°09′54″W / 46.41444°N 104.16500°W / 46.41444; -104.16500 (Morris Butte), el. 3,314 feet (1,010 m)[10]
- Nelson Butte, 46°14′49″N 104°52′10″W / 46.24694°N 104.86944°W / 46.24694; -104.86944 (Nelson Butte), el. 3,123 feet (952 m)[11]
- Rocking Chair Butte, 46°40′45″N 104°26′15″W / 46.67917°N 104.43750°W / 46.67917; -104.43750 (Rocking Chair Butte), el. 2,910 feet (890 m)[12]
- Seven-up Butte, 46°10′54″N 104°32′10″W / 46.18167°N 104.53611°W / 46.18167; -104.53611 (Seven-up Butte), el. 3,491 feet (1,064 m)[13]
- Shell Butte, 46°37′05″N 104°14′26″W / 46.61806°N 104.24056°W / 46.61806; -104.24056 (Shell Butte), el. 3,369 feet (1,027 m)[14]
- Snider Hill, 45°56′36″N 104°02′59″W / 45.94333°N 104.04972°W / 45.94333; -104.04972 (Snider Hill), el. 3,159 feet (963 m)[15]
- Twin Buttes, 46°22′54″N 104°46′22″W / 46.38167°N 104.77278°W / 46.38167; -104.77278 (Twin Buttes), el. 2,897 feet (883 m)[16]
- ^ "Antelope Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Bearhorn Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Bracket Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Cap Rock". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Cedar Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Grassy Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Harmon Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Haystack Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Monument Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Morris Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Nelson Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Rocking Chair Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Seven-up Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Shell Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Snider Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Twin Buttes". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.