This list is incomplete; you can help by adding missing items. (February 2011)

There are at least 60 named mountains in Fergus County, Montana.

• Bald Butte, 47°12′48″N 109°18′04″W / 47.21333°N 109.30111°W / 47.21333; -109.30111 (Bald Butte), el. 5,111 feet (1,558 m)^[1]
• Bald Butte, 46°47′29″N 108°58′57″W / 46.79139°N 108.98250°W / 46.79139; -108.98250 (Bald Butte), el. 5,607 feet (1,709 m)^[2]
• Bald Butte, 46°54′51″N 108°38′25″W / 46.91417°N 108.64028°W / 46.91417; -108.64028 (Bald Butte), el. 4,055 feet (1,236 m)^[3]
• Bald Butte, 47°36′57″N 109°10′23″W / 47.61583°N 109.17306°W / 47.61583; -109.17306 (Bald Butte), el. 3,478 feet (1,060 m)^[4]
• Big Grassy Peak, 47°12′14″N 109°13′04″W / 47.20389°N 109.21778°W / 47.20389; -109.21778 (Big Grassy Peak), el. 5,899 feet (1,798 m)^[5]
• Black Butte, 47°14′08″N 108°58′13″W / 47.23556°N 108.97028°W / 47.23556; -108.97028 (Black Butte), el. 5,535 feet (1,687 m)^[6]
• Black Butte, 47°28′40″N 109°45′00″W / 47.47778°N 109.75000°W / 47.47778; -109.75000 (Black Butte), el. 3,487 feet (1,063 m)^[7]
• Bloomfield Butte, 47°33′18″N 109°15′43″W / 47.55500°N 109.26194°W / 47.55500; -109.26194 (Bloomfield Butte), el. 3,435 feet (1,047 m)^[8]
• Burnette Peak, 47°09′03″N 109°21′13″W / 47.15083°N 109.35361°W / 47.15083; -109.35361 (Burnette Peak), el. 5,830 feet (1,780 m)^[9]
• Button Butte, 47°30′13″N 108°30′21″W / 47.50361°N 108.50583°W / 47.50361; -108.50583 (Button Butte), el. 2,966 feet (904 m)^[10]
• Button Butte, 46°57′25″N 108°42′55″W / 46.95694°N 108.71528°W / 46.95694; -108.71528 (Button Butte), el. 4,501 feet (1,372 m)^[11]
• Castle Butte, 46°58′22″N 109°24′06″W / 46.97278°N 109.40167°W / 46.97278; -109.40167 (Castle Butte), el. 4,947 feet (1,508 m)^[12]
• Cherry Top, 47°37′52″N 109°47′12″W / 47.63111°N 109.78667°W / 47.63111; -109.78667 (Cherry Top), el. 3,514 feet (1,071 m)^[13]
• Clagget Hill, 47°43′06″N 109°37′56″W / 47.71833°N 109.63222°W / 47.71833; -109.63222 (Clagget Hill), el. 2,648 feet (807 m)^[14]
• Coal Hill, 47°22′22″N 108°47′18″W / 47.37278°N 108.78833°W / 47.37278; -108.78833 (Coal Hill), el. 3,465 feet (1,056 m)^[15]
• Collar Peak, 47°12′07″N 109°11′41″W / 47.20194°N 109.19472°W / 47.20194; -109.19472 (Collar Peak), el. 5,964 feet (1,818 m)^[16]
• Cone Butte, 47°15′31″N 109°04′19″W / 47.25861°N 109.07194°W / 47.25861; -109.07194 (Cone Butte), el. 5,807 feet (1,770 m)^[17]
• Crystal Peak, 47°11′09″N 109°11′40″W / 47.18583°N 109.19444°W / 47.18583; -109.19444 (Crystal Peak), el. 5,942 feet (1,811 m)^[18]
• Elk Peak, 47°13′36″N 109°08′40″W / 47.22667°N 109.14444°W / 47.22667; -109.14444 (Elk Peak), el. 5,919 feet (1,804 m)^[19]
• Flat Mountain, 47°05′23″N 109°14′09″W / 47.08972°N 109.23583°W / 47.08972; -109.23583 (Flat Mountain), el. 5,479 feet (1,670 m)^[20]
• Gold Hill, 47°10′42″N 109°12′55″W / 47.17833°N 109.21528°W / 47.17833; -109.21528 (Gold Hill), el. 5,410 feet (1,650 m)^[21]
• Greathouse Peak, 46°46′07″N 109°21′21″W / 46.76861°N 109.35583°W / 46.76861; -109.35583 (Greathouse Peak), el. 8,658 feet (2,639 m)^[22]
• Haystack Butte, 47°21′52″N 108°30′10″W / 47.36444°N 108.50278°W / 47.36444; -108.50278 (Haystack Butte), el. 3,369 feet (1,027 m)^[23]
• Indian Butte, 47°33′43″N 108°45′22″W / 47.56194°N 108.75611°W / 47.56194; -108.75611 (Indian Butte), el. 3,045 feet (928 m)^[24]
• Indian Graves Butte, 47°16′14″N 109°37′50″W / 47.27056°N 109.63056°W / 47.27056; -109.63056 (Indian Graves Butte), el. 3,904 feet (1,190 m)^[25]
• Judith Peak, 47°13′00″N 109°13′19″W / 47.21667°N 109.22194°W / 47.21667; -109.22194 (Judith Peak), el. 6,293 feet (1,918 m)^[26]
• Jump Off Peak, 46°48′21″N 109°27′00″W / 46.80583°N 109.45000°W / 46.80583; -109.45000 (Jump Off Peak), el. 7,510 feet (2,290 m)^[27]
• Kelly Hill, 47°05′52″N 109°16′20″W / 47.09778°N 109.27222°W / 47.09778; -109.27222 (Kelly Hill), el. 5,351 feet (1,631 m)^[28]
• Lewis Peak, 47°13′56″N 109°07′04″W / 47.23222°N 109.11778°W / 47.23222; -109.11778 (Lewis Peak), el. 5,600 feet (1,700 m)^[29]
• Lime Cave Peak, 46°49′15″N 109°26′21″W / 46.82083°N 109.43917°W / 46.82083; -109.43917 (Lime Cave Peak), el. 7,018 feet (2,139 m)^[30]
• Lookout Peak, 47°14′43″N 109°02′05″W / 47.24528°N 109.03472°W / 47.24528; -109.03472 (Lookout Peak), el. 5,312 feet (1,619 m)^[31]
• Lyons Butte, 46°53′50″N 109°07′50″W / 46.89722°N 109.13056°W / 46.89722; -109.13056 (Lyons Butte), el. 5,469 feet (1,667 m)^[32]
• Maginnis Mountain, 47°12′54″N 109°10′18″W / 47.21500°N 109.17167°W / 47.21500; -109.17167 (Maginnis Mountain), el. 5,810 feet (1,770 m)^[33]
• Maiden Peak, 47°11′23″N 109°13′37″W / 47.18972°N 109.22694°W / 47.18972; -109.22694 (Maiden Peak), el. 5,620 feet (1,710 m)^[34]
• McDonald Butte, 46°59′11″N 109°01′05″W / 46.98639°N 109.01806°W / 46.98639; -109.01806 (McDonald Butte), el. 4,288 feet (1,307 m)^[35]
• Mount Harlow, 46°47′47″N 109°29′42″W / 46.79639°N 109.49500°W / 46.79639; -109.49500 (Mount Harlow), el. 7,106 feet (2,166 m)^[36]
• New Year Peak, 47°09′20″N 109°20′22″W / 47.15556°N 109.33944°W / 47.15556; -109.33944 (New Year Peak), el. 5,879 feet (1,792 m)^[37]
• Oil Well Hill, 47°38′16″N 109°28′28″W / 47.63778°N 109.47444°W / 47.63778; -109.47444 (Oil Well Hill), el. 3,337 feet (1,017 m)^[38]
• Old Baldy, 46°45′08″N 109°18′50″W / 46.75222°N 109.31389°W / 46.75222; -109.31389 (Old Baldy), el. 8,671 feet (2,643 m)^[39]
• Peck Hills, 47°32′36″N 109°04′20″W / 47.54333°N 109.07222°W / 47.54333; -109.07222 (Peck Hills), el. 3,120 feet (950 m)^[40]
• Pekay Peak, 47°09′44″N 109°13′40″W / 47.16222°N 109.22778°W / 47.16222; -109.22778 (Pekay Peak), el. 5,997 feet (1,828 m)^[41]
• Porphyry Peak, 47°12′48″N 109°15′56″W / 47.21333°N 109.26556°W / 47.21333; -109.26556 (Porphyry Peak), el. 5,997 feet (1,828 m)^[42]
• Pyramid Peak, 47°08′37″N 109°17′53″W / 47.14361°N 109.29806°W / 47.14361; -109.29806 (Pyramid Peak), el. 6,033 feet (1,839 m)^[43]
• Rattlesnake Butte, 47°16′21″N 108°58′14″W / 47.27250°N 108.97056°W / 47.27250; -108.97056 (Rattlesnake Butte), el. 3,953 feet (1,205 m)^[44]
• Red Mountain, 47°13′31″N 109°11′30″W / 47.22528°N 109.19167°W / 47.22528; -109.19167 (Red Mountain), el. 6,122 feet (1,866 m)^[45]
• Reed Hill, 47°40′46″N 109°38′03″W / 47.67944°N 109.63417°W / 47.67944; -109.63417 (Reed Hill), el. 2,825 feet (861 m)^[46]
• Reppe Butte, 47°43′45″N 109°00′35″W / 47.72917°N 109.00972°W / 47.72917; -109.00972 (Reppe Butte), el. 3,228 feet (984 m)^[47]
• Rocky Butte, 47°11′00″N 109°29′34″W / 47.18333°N 109.49278°W / 47.18333; -109.49278 (Rocky Butte), el. 4,842 feet (1,476 m)^[48]
• Sand Rock Hill, 47°17′34″N 109°39′20″W / 47.29278°N 109.65556°W / 47.29278; -109.65556 (Sand Rock Hill), el. 3,730 feet (1,140 m)^[49]
• Seventynine Hill, 47°38′01″N 109°37′44″W / 47.63361°N 109.62889°W / 47.63361; -109.62889 (Seventynine Hill), el. 2,769 feet (844 m)^[50]
• Seventytwo Hills, 47°19′33″N 109°36′08″W / 47.32583°N 109.60222°W / 47.32583; -109.60222 (Seventytwo Hills), el. 3,835 feet (1,169 m)^[51]
• Sheep Mountain, 47°10′02″N 109°12′53″W / 47.16722°N 109.21472°W / 47.16722; -109.21472 (Sheep Mountain), el. 5,840 feet (1,780 m)^[52]
• Sheepherder Peak, 47°22′55″N 109°17′36″W / 47.38194°N 109.29333°W / 47.38194; -109.29333 (Sheepherder Peak), el. 3,953 feet (1,205 m)^[53]
• Smoky Johnson Hill, 47°34′47″N 108°30′14″W / 47.57972°N 108.50389°W / 47.57972; -108.50389 (Smoky Johnson Hill), el. 2,766 feet (843 m)^[54]
• The Peak, 47°38′05″N 109°44′02″W / 47.63472°N 109.73389°W / 47.63472; -109.73389 (The Peak), el. 3,353 feet (1,022 m)^[55]
• Three Buttes, 46°54′05″N 108°39′38″W / 46.90139°N 108.66056°W / 46.90139; -108.66056 (Three Buttes), el. 4,114 feet (1,254 m)^[56]
• Twin Buttes, 47°25′23″N 109°41′20″W / 47.42306°N 109.68889°W / 47.42306; -109.68889 (Twin Buttes), el. 3,599 feet (1,097 m)^[57]
• West Peak, 46°46′47″N 109°32′11″W / 46.77972°N 109.53639°W / 46.77972; -109.53639 (West Peak), el. 8,186 feet (2,495 m)^[58]
• White Horse Butte, 47°41′53″N 109°09′21″W / 47.69806°N 109.15583°W / 47.69806; -109.15583 (White Horse Butte), el. 3,255 feet (992 m)^[59]
• Woodhawk Hill, 47°42′51″N 109°12′32″W / 47.71417°N 109.20889°W / 47.71417; -109.20889 (Woodhawk Hill), el. 3,524 feet (1,074 m)^[60]

• List of mountains in Montana
• List of mountain ranges in Montana