There are at least 17 named mountains in Yellowstone County, Montana.
- Bender Hill, 46°16′13″N 107°38′58″W / 46.27028°N 107.64944°W / 46.27028; -107.64944 (Bender Hill), el. 3,425 feet (1,044 m)[1]
- Castle Butte, 46°08′26″N 107°56′58″W / 46.14056°N 107.94944°W / 46.14056; -107.94944 (Castle Butte), el. 3,537 feet (1,078 m)[2]
- Deer Point, 45°58′59″N 108°18′15″W / 45.98306°N 108.30417°W / 45.98306; -108.30417 (Deer Point), el. 3,268 feet (996 m)[3]
- Fivemile Hill, 46°11′26″N 107°34′45″W / 46.19056°N 107.57917°W / 46.19056; -107.57917 (Fivemile Hill), el. 3,363 feet (1,025 m)[4]
- Lookout Point, 46°11′48″N 108°02′11″W / 46.19667°N 108.03639°W / 46.19667; -108.03639 (Lookout Point), el. 3,625 feet (1,105 m)[5]
- Mail Box Hill, 46°20′22″N 107°45′27″W / 46.33944°N 107.75750°W / 46.33944; -107.75750 (Mail Box Hill), el. 3,527 feet (1,075 m)[6]
- McCormick Hill, 45°32′17″N 108°33′20″W / 45.53806°N 108.55556°W / 45.53806; -108.55556 (McCormick Hill), el. 4,472 feet (1,363 m)[7]
- Mexican Buttes, 46°17′04″N 107°40′50″W / 46.28444°N 107.68056°W / 46.28444; -107.68056 (Mexican Buttes), el. 3,451 feet (1,052 m)[8]
- Mud Butte, 46°12′56″N 107°48′52″W / 46.21556°N 107.81444°W / 46.21556; -107.81444 (Mud Butte), el. 3,235 feet (986 m)[9]
- Ninemile Hill, 45°50′58″N 108°34′50″W / 45.84944°N 108.58056°W / 45.84944; -108.58056 (Ninemile Hill), el. 3,478 feet (1,060 m)[10]
- Ninemile Hill, 46°15′15″N 107°38′14″W / 46.25417°N 107.63722°W / 46.25417; -107.63722 (Ninemile Hill), el. 3,468 feet (1,057 m)[11]
- Rattlesnake Butte, 45°54′28″N 108°26′17″W / 45.90778°N 108.43806°W / 45.90778; -108.43806 (Rattlesnake Butte), el. 3,346 feet (1,020 m)[12]
- Round Butte, 45°33′54″N 108°45′38″W / 45.56500°N 108.76056°W / 45.56500; -108.76056 (Round Butte), el. 4,071 feet (1,241 m)[13]
- Steamboat Butte, 46°15′10″N 108°06′03″W / 46.25278°N 108.10083°W / 46.25278; -108.10083 (Steamboat Butte), el. 3,875 feet (1,181 m)[14]
- Stratford Hill, 45°31′07″N 108°35′54″W / 45.51861°N 108.59833°W / 45.51861; -108.59833 (Stratford Hill), el. 4,967 feet (1,514 m)[15]
- Twin Buttes, 46°18′21″N 107°42′37″W / 46.30583°N 107.71028°W / 46.30583; -107.71028 (Twin Buttes), el. 3,533 feet (1,077 m)[16]
- Woody Mountain, 45°31′13″N 108°11′57″W / 45.52028°N 108.19917°W / 45.52028; -108.19917 (Woody Mountain), el. 4,334 feet (1,321 m)[17]
- ^ "Bender Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Castle Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Deer Point". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Fivemile Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Lookout Point". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Mail Box Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "McCormick Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Mexican Buttes". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Mud Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Ninemile Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Ninemile Hill". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Rattlesnake Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Round Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Steamboat Butte". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.
- ^ "Stratford 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.
- ^ "Woody Mountain". Geographic Names Information System. United States Geological Survey, United States Department of the Interior.