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

There are at least 115 named Islands in Montana. These islands occur in rivers, lakes and reservoirs.

Islands east of the Continental Divide

Missouri River

• Archers Island, Chouteau County, Montana, 47°56′39″N 110°26′16″W / 47.94417°N 110.43778°W / 47.94417; -110.43778 (Archers Island), el. 2,562 feet (781 m) ^[1]
• Baker Bar, Chouteau County, Montana, 47°50′20″N 110°37′14″W / 47.83889°N 110.62056°W / 47.83889; -110.62056 (Baker Bar), el. 2,615 feet (797 m) ^[2]
• Boggs Island, Chouteau County, Montana, 48°00′48″N 110°16′26″W / 48.01333°N 110.27389°W / 48.01333; -110.27389 (Boggs Island), el. 2,513 feet (766 m) ^[3]
• Brule Bar, Chouteau County, Montana, 47°52′44″N 110°30′10″W / 47.87889°N 110.50278°W / 47.87889; -110.50278 (Brule Bar), el. 2,569 feet (783 m) ^[4]
• Buckshot Island, Cascade County, Montana, 47°25′53″N 111°21′20″W / 47.43139°N 111.35556°W / 47.43139; -111.35556 (Buckshot Island), el. 3,323 feet (1,013 m) ^[5]
• Chelsea Island, Roosevelt County, Montana, 48°06′52″N 105°20′07″W / 48.11444°N 105.33528°W / 48.11444; -105.33528 (Chelsea Island), el. 1,972 feet (601 m) ^[6]
• Council Island, Chouteau County, Montana, 47°44′05″N 109°36′45″W / 47.73472°N 109.61250°W / 47.73472; -109.61250 (Council Island), el. 2,408 feet (734 m) ^[7]
• Cow Island, Blaine County, Montana, 47°46′20″N 108°56′52″W / 47.77222°N 108.94778°W / 47.77222; -108.94778 (Cow Island), el. 2,293 feet (699 m) ^[8]
• Crow Coulee Bar, Chouteau County, Montana, 47°59′14″N 110°19′47″W / 47.98722°N 110.32972°W / 47.98722; -110.32972 (Crow Coulee Bar), el. 2,529 feet (771 m) ^[9]
• Duck Island, Valley County, Montana, 48°02′59″N 106°24′52″W / 48.04972°N 106.41444°W / 48.04972; -106.41444 (Duck Island), el. 2,044 feet (623 m) ^[10]
• Evans Bend, Chouteau County, Montana, 47°51′08″N 110°34′28″W / 47.85222°N 110.57444°W / 47.85222; -110.57444, el. 2,608 feet (795 m) ^[11]
• Fisher Island, Cascade County, Montana, 47°24′35″N 111°18′25″W / 47.40972°N 111.30694°W / 47.40972; -111.30694 (Fisher Island), el. 3,333 feet (1,016 m) ^[12]
• Grand Island, Phillips County, Montana, 47°41′51″N 108°48′09″W / 47.69750°N 108.80250°W / 47.69750; -108.80250 (Grand Island), el. 2,316 feet (706 m) ^[13]
• Holmes Council Islands, Fergus County, Montana, 47°44′38″N 109°33′15″W / 47.74389°N 109.55417°W / 47.74389; -109.55417 (Holmes Council Islands), el. 2,398 feet (731 m) ^[14]
• Iron City Islands, Fergus County, Montana, 47°44′44″N 109°31′14″W / 47.74556°N 109.52056°W / 47.74556; -109.52056 (Iron City Islands), el. 2,388 feet (728 m) ^[15]
• Jones Island, Phillips County, Montana, 47°37′25″N 108°35′50″W / 47.62361°N 108.59722°W / 47.62361; -108.59722 (Jones Island), el. 2,251 feet (686 m) ^[16]
• King Island, Fergus County, Montana, 47°37′08″N 108°38′51″W / 47.61889°N 108.64750°W / 47.61889; -108.64750 (King Island), el. 2,260 feet (690 m) ^[17]
• Lower Two Calf Island, Phillips County, Montana, 47°38′45″N 108°45′46″W / 47.64583°N 108.76278°W / 47.64583; -108.76278 (Lower Two Calf Island), el. 2,277 feet (694 m) ^[18]
• Nelson Island, Cascade County, Montana, 47°20′38″N 111°35′13″W / 47.34389°N 111.58694°W / 47.34389; -111.58694 (Nelson Island), el. 3,350 feet (1,020 m) ^[19]
• PN Island, Fergus County, Montana, 47°44′12″N 109°38′17″W / 47.73667°N 109.63806°W / 47.73667; -109.63806 (PN Island), el. 2,408 feet (734 m) ^[20]
• Park Island, Cascade County, Montana, 47°29′01″N 111°18′53″W / 47.48361°N 111.31472°W / 47.48361; -111.31472 (Park Island), el. 3,317 feet (1,011 m) ^[21]
• Pine Island, Cascade County, Montana, 47°10′52″N 111°48′33″W / 47.18111°N 111.80917°W / 47.18111; -111.80917 (Pine Island), el. 3,379 feet (1,030 m) ^[22]
• Pablo Island, Chouteau County, Montana, 47°45′43″N 109°54′52″W / 47.76194°N 109.91444°W / 47.76194; -109.91444 (Pablo Island), el. 2,467 feet (752 m) ^[23]
• Roosevelt Island, Chouteau County, Montana, 47°48′16″N 110°41′23″W / 47.80444°N 110.68972°W / 47.80444; -110.68972 (Roosevelt Island), el. 2,628 feet (801 m) ^[24]
• Sacajawea Island, Cascade County, Montana, 47°31′07″N 111°18′18″W / 47.51861°N 111.30500°W / 47.51861; -111.30500 (Sacajawea Island), el. 3,314 feet (1,010 m) ^[25]
• Scout Island, Valley County, Montana, 48°02′02″N 106°25′30″W / 48.03389°N 106.42500°W / 48.03389; -106.42500 (Scout Island), el. 2,057 feet (627 m) ^[26]
• Shonkin Bar, Chouteau County, Montana, 47°50′42″N 110°36′04″W / 47.84500°N 110.60111°W / 47.84500; -110.60111 (Shonkin Bar), el. 2,615 feet (797 m) ^[27]
• Skinners Island, Roosevelt County, Montana, 48°05′32″N 105°06′56″W / 48.09222°N 105.11556°W / 48.09222; -105.11556 (Skinners Island), el. 1,952 feet (595 m) ^[28]
• Steamboat Island, Cascade County, Montana, 47°31′47″N 111°14′27″W / 47.52972°N 111.24083°W / 47.52972; -111.24083 (Steamboat Island), el. 3,251 feet (991 m) ^[29]
• Sturgeon Island, Blaine County, Montana, 47°47′56″N 109°05′02″W / 47.79889°N 109.08389°W / 47.79889; -109.08389 (Sturgeon Island), el. 2,352 feet (717 m) ^[30]
• Taylor Island, Cascade County, Montana, 47°28′07″N 111°19′01″W / 47.46861°N 111.31694°W / 47.46861; -111.31694 (Taylor Island), el. 3,323 feet (1,013 m) ^[31]
• Three Islands, Chouteau County, Montana, 47°58′12″N 110°22′09″W / 47.97000°N 110.36917°W / 47.97000; -110.36917 (Three Islands), el. 2,546 feet (776 m) ^[32]
• Upper Two Calf Island, Phillips County, Montana, 47°39′23″N 108°46′58″W / 47.65639°N 108.78278°W / 47.65639; -108.78278 (Upper Two Calf Island), el. 2,310 feet (700 m) ^[33]
• White Shield Island, Roosevelt County, Montana, 48°05′03″N 105°03′39″W / 48.08417°N 105.06083°W / 48.08417; -105.06083 (White Shield Island), el. 1,942 feet (592 m) ^[34]
• Wolf Island, Chouteau County, Montana, 47°44′23″N 109°52′40″W / 47.73972°N 109.87778°W / 47.73972; -109.87778 (Wolf Island), el. 2,447 feet (746 m) ^[35]
• Yorks Islands, Broadwater County, Montana, 46°15′45″N 111°29′28″W / 46.26250°N 111.49111°W / 46.26250; -111.49111 (Yorks Islands), el. 3,855 feet (1,175 m) ^[36]

Yellowstone River

• Beaver Island, Richland County, Montana, 47°26′05″N 104°20′12″W / 47.43472°N 104.33667°W / 47.43472; -104.33667 (Beaver Island), el. 1,965 feet (599 m) ^[37]
• Big Marys Island, Yellowstone County, Montana, 46°00′23″N 107°55′47″W / 46.00639°N 107.92972°W / 46.00639; -107.92972 (Big Marys Island), el. 2,854 feet (870 m) ^[38]
• Breakneck Island, Richland County, Montana, 47°26′47″N 104°18′41″W / 47.44639°N 104.31139°W / 47.44639; -104.31139 (Breakneck Island), el. 1,946 feet (593 m) ^[39]
• Buella Island, Richland County, Montana, 47°36′23″N 104°11′42″W / 47.60639°N 104.19500°W / 47.60639; -104.19500 (Buella Island), el. 1,913 feet (583 m) ^[40]
• Cherry Island, Yellowstone County, Montana, 45°49′00″N 108°26′53″W / 45.81667°N 108.44806°W / 45.81667; -108.44806 (Cherry Island), el. 3,081 feet (939 m) ^[41]
• Chrome Island, Wibaux County, Montana, 47°20′43″N 104°24′40″W / 47.34528°N 104.41111°W / 47.34528; -104.41111 (Chrome Island), el. 1,985 feet (605 m) ^[42]
• Crittenden Island, Richland County, Montana, 47°29′15″N 104°17′02″W / 47.48750°N 104.28389°W / 47.48750; -104.28389 (Crittenden Island), el. 1,932 feet (589 m) ^[43]
• Devils Island, Richland County, Montana, 47°26′28″N 104°20′02″W / 47.44111°N 104.33389°W / 47.44111; -104.33389 (Devils Island), el. 1,946 feet (593 m) ^[44]
• Diamond Island, Richland County, Montana, 47°35′37″N 104°12′57″W / 47.59361°N 104.21583°W / 47.59361; -104.21583 (Diamond Island), el. 1,909 feet (582 m) ^[45]
• Dovers Island, Yellowstone County, Montana, 45°51′24″N 108°23′31″W / 45.85667°N 108.39194°W / 45.85667; -108.39194 (Dovers Island), el. 3,045 feet (928 m) ^[46]
• Duck Island, Richland County, Montana, 47°24′56″N 104°20′35″W / 47.41556°N 104.34306°W / 47.41556; -104.34306 (Duck Island), el. 1,968 feet (600 m) ^[47]
• Elk Island, Richland County, Montana, 47°28′13″N 104°18′22″W / 47.47028°N 104.30611°W / 47.47028; -104.30611 (Elk Island), el. 1,942 feet (592 m) ^[48]
• Elms Island, Richland County, Montana, 47°24′13″N 104°21′07″W / 47.40361°N 104.35194°W / 47.40361; -104.35194 (Elms Island), el. 1,952 feet (595 m) ^[49]
• Government Island, Yellowstone County, Montana, 46°09′25″N 107°28′41″W / 46.15694°N 107.47806°W / 46.15694; -107.47806 (Government Island), el. 2,703 feet (824 m) ^[50]
• Gros Ventre Island, Richland County, Montana, 47°22′38″N 104°23′43″W / 47.37722°N 104.39528°W / 47.37722; -104.39528 (Gros Ventre Island), el. 1,955 feet (596 m) ^[51]
• Idiom Island, Richland County, Montana, 47°21′47″N 104°23′59″W / 47.36306°N 104.39972°W / 47.36306; -104.39972 (Idiom Island), el. 1,972 feet (601 m) ^[52]
• Howery Island, Treasure County, Montana, 46°14′50″N 107°22′02″W / 46.24722°N 107.36722°W / 46.24722; -107.36722 (Howery Island), el. 2,664 feet (812 m) ^[53]
• Joes Island, Dawson County, Montana, 47°16′08″N 104°31′54″W / 47.26889°N 104.53167°W / 47.26889; -104.53167 (Joes Island), el. 2,018 feet (615 m) ^[54]
• Livingston Island, Park County, Montana, 45°39′38″N 110°32′43″W / 45.66056°N 110.54528°W / 45.66056; -110.54528 (Livingston Island), el. 4,478 feet (1,365 m) ^[55]
• Marys Island, Richland County, Montana, 47°23′09″N 104°22′10″W / 47.38583°N 104.36944°W / 47.38583; -104.36944 (Marys Island), el. 1,975 feet (602 m) ^[56]
• Monroe Island, Dawson County, Montana, 46°58′20″N 104°47′22″W / 46.97222°N 104.78944°W / 46.97222; -104.78944 (Monroe Island), el. 2,083 feet (635 m) ^[57]
• Pirogue Island, Custer County, Montana, 46°26′26″N 105°49′02″W / 46.44056°N 105.81722°W / 46.44056; -105.81722 (Pirogue Island), el. 2,349 feet (716 m) ^[58]
• Randalls Island, Yellowstone County, Montana, 46°02′00″N 107°51′09″W / 46.03333°N 107.85250°W / 46.03333; -107.85250 (Randalls Island), el. 2,825 feet (861 m) ^[59]
• Schaffer Island, Dawson County, Montana, 47°13′55″N 104°37′47″W / 47.23194°N 104.62972°W / 47.23194; -104.62972 (Schaffer Island), el. 2,011 feet (613 m) ^[60]
• Seven Sisters Island, Richland County, Montana, 47°33′42″N 104°14′40″W / 47.56167°N 104.24444°W / 47.56167; -104.24444 (Seven Sisters Island), el. 1,903 feet (580 m) ^[61]
• Siebeck Island, Park County, Montana, 45°38′28″N 110°33′51″W / 45.64111°N 110.56417°W / 45.64111; -110.56417 (Siebeck Island), el. 4,505 feet (1,373 m) ^[62]
• Snake Island, Richland County, Montana, 47°21′10″N 104°24′42″W / 47.35278°N 104.41167°W / 47.35278; -104.41167 (Snake Island), el. 1,985 feet (605 m) ^[63]
• Spraklin Island, Yellowstone County, Montana, 45°55′13″N 108°18′30″W / 45.92028°N 108.30833°W / 45.92028; -108.30833 (Spraklin Island), el. 2,995 feet (913 m) ^[64]
• Westover Island, Carbon County, Montana, 45°35′05″N 109°04′40″W / 45.58472°N 109.07778°W / 45.58472; -109.07778 (Westover Island), el. 3,451 feet (1,052 m) ^[65]

Other waters east of the divide

• Big Island, Sheridan County, Montana, 48°26′50″N 104°23′00″W / 48.44722°N 104.38333°W / 48.44722; -104.38333 (Big Island), el. 1,942 feet (592 m) ^[66] in Medicine Lake
• Bruces Island, Sheridan County, Montana, 48°28′26″N 104°27′05″W / 48.47389°N 104.45139°W / 48.47389; -104.45139 (Bruces Island), el. 1,946 feet (593 m) ^[67] in Medicine Lake
• Far West Island, Big Horn County, Montana, 45°38′04″N 107°40′02″W / 45.63444°N 107.66722°W / 45.63444; -107.66722 (Far West Island), el. 2,943 feet (897 m) ^[68] in the Big Horn River
• Fire Island, Sweet Grass County, Montana, 45°49′16″N 109°56′58″W / 45.82111°N 109.94944°W / 45.82111; -109.94944 (Fire Island), el. 4,104 feet (1,251 m) ^[69] in the Boulder River
• Gull Island, Sheridan County, Montana, 48°27′31″N 104°23′31″W / 48.45861°N 104.39194°W / 48.45861; -104.39194 (Gull Island), el. 1,936 feet (590 m) ^[70] in Medicine Lake
• Long Island, Phillips County, Montana, 48°25′23″N 107°41′46″W / 48.42306°N 107.69611°W / 48.42306; -107.69611 (Long Island), el. 2,211 feet (674 m) ^[71] in Lake Bowdoin
• Lovell Island, Beaverhead County, Montana, 45°12′02″N 112°40′52″W / 45.20056°N 112.68111°W / 45.20056; -112.68111 (Lovell Island), el. 5,138 feet (1,566 m) ^[72] in the Beaverhead River
• Pelican Islands, Phillips County, Montana, 48°24′42″N 107°40′38″W / 48.41167°N 107.67722°W / 48.41167; -107.67722 (Pelican Islands), el. 2,211 feet (674 m) ^[73] in Lake Bowdoin
• Smith Island, Beaverhead County, Montana, 45°12′20″N 112°40′41″W / 45.20556°N 112.67806°W / 45.20556; -112.67806 (Smith Island), el. 5,125 feet (1,562 m) ^[74] in the Beaverhead River
• The Island, Carter County, Montana, 45°23′10″N 104°04′06″W / 45.38611°N 104.06833°W / 45.38611; -104.06833 (The Island), el. 3,199 feet (975 m) ^[75] in the Little Missouri River
• Thunderbird Island, Glacier County, Montana, 48°47′23″N 113°24′51″W / 48.78972°N 113.41417°W / 48.78972; -113.41417 (Thunderbird Island), el. 4,488 feet (1,368 m) ^[76] in Saint Mary Lake
• Youngs Island, Sheridan County, Montana, 48°27′49″N 104°26′47″W / 48.46361°N 104.44639°W / 48.46361; -104.44639 (Youngs Island), el. 1,949 feet (594 m) ^[77] in Medicine Lake
• Wild Goose Island, Glacier County, Montana, 48°41′20″N 113°32′23″W / 48.68889°N 113.53972°W / 48.68889; -113.53972 (Wild Goose Island), el. 4,488 feet (1,368 m) ^[78] in Saint Mary Lake
• Woody Island, Phillips County, Montana, 48°24′18″N 107°40′57″W / 48.40500°N 107.68250°W / 48.40500; -107.68250 (Woody Island), el. 2,215 feet (675 m) ^[79] in Lake Bowdoin
• York Island, Garfield County, Montana, 47°55′48″N 106°27′58″W / 47.93000°N 106.46611°W / 47.93000; -106.46611 (York Island), el. 2,333 feet (711 m) ^[80] in Fort Peck Lake

Islands west of the Continental Divide

Flathead Lake

• Bird Island, Lake County, Montana, 47°47′59″N 114°04′45″W / 47.79972°N 114.07917°W / 47.79972; -114.07917 (Bird Island), el. 2,943 feet (897 m) ^[81]
• Bull Island, Lake County, Montana, 47°46′14″N 114°06′58″W / 47.77056°N 114.11611°W / 47.77056; -114.11611 (Bull Island), el. 2,999 feet (914 m) ^[82]
• Cedar Island, Lake County, Montana, 47°53′45″N 114°09′58″W / 47.89583°N 114.16611°W / 47.89583; -114.16611 (Cedar Island), el. 2,940 feet (900 m) ^[83]
• Cromwell Island, Lake County, Montana, 47°51′01″N 114°15′49″W / 47.85028°N 114.26361°W / 47.85028; -114.26361 (Cromwell Island), el. 3,136 feet (956 m) ^[84]
• Douglas Islands, Lake County, Montana, 47°56′01″N 114°10′06″W / 47.93361°N 114.16833°W / 47.93361; -114.16833 (Douglas Islands), el. 2,897 feet (883 m) ^[85]
• Dream Island, Lake County, Montana, 47°48′43″N 114°13′50″W / 47.81194°N 114.23056°W / 47.81194; -114.23056 (Dream Island), el. 2,930 feet (890 m) ^[86]
• Goose Island, Lake County, Montana, 47°56′55″N 114°10′40″W / 47.94861°N 114.17778°W / 47.94861; -114.17778 (Goose Island), el. 2,897 feet (883 m) ^[87]
• Invitation Island, Flathead County, Montana, 48°04′15″N 114°13′01″W / 48.07083°N 114.21694°W / 48.07083; -114.21694 (Invitation Island), el. 2,897 feet (883 m) ^[88]
• Melita Island, Lake County, Montana, 47°49′17″N 114°14′08″W / 47.82139°N 114.23556°W / 47.82139; -114.23556 (Melita Island), el. 2,936 feet (895 m) ^[89]
• Little Bull Island, Lake County, Montana, 47°46′05″N 114°07′30″W / 47.76806°N 114.12500°W / 47.76806; -114.12500 (Little Bull Island), el. 2,963 feet (903 m) ^[90]
• Mary B Island, Lake County, Montana, 47°55′31″N 114°10′08″W / 47.92528°N 114.16889°W / 47.92528; -114.16889 (Mary B Island), el. 2,897 feet (883 m) ^[91]
• Rock Island, Lake County, Montana, 47°53′41″N 114°10′17″W / 47.89472°N 114.17139°W / 47.89472; -114.17139 (Rock Island), el. 2,910 feet (890 m) ^[92]
• Shelter Island, Lake County, Montana, 47°53′44″N 114°10′27″W / 47.89556°N 114.17417°W / 47.89556; -114.17417 (Shelter Island), el. 2,943 feet (897 m) ^[93]
• Wild Horse Island, Lake County, Montana, 47°50′43″N 114°12′54″W / 47.84528°N 114.21500°W / 47.84528; -114.21500 (Wild Horse Island), el. 3,494 feet (1,065 m) ^[94]

Hungry Horse Reservoir

• Clayton Island, Flathead County, Montana, 48°14′23″N 113°50′10″W / 48.23972°N 113.83611°W / 48.23972; -113.83611 (Clayton Island), el. 3,642 feet (1,110 m) ^[95]
• Elk Island, Flathead County, Montana, 48°14′25″N 113°47′53″W / 48.24028°N 113.79806°W / 48.24028; -113.79806 (Elk Island), el. 3,596 feet (1,096 m) ^[96]
• Fire Island, Flathead County, Montana, 48°17′43″N 113°53′49″W / 48.29528°N 113.89694°W / 48.29528; -113.89694 (Fire Island), el. 3,602 feet (1,098 m) ^[97]
• Kelly Island, Flathead County, Montana, 48°15′55″N 113°49′18″W / 48.26528°N 113.82167°W / 48.26528; -113.82167 (Kelly Island), el. 3,602 feet (1,098 m) ^[98]
• Lost Island, Flathead County, Montana, 48°12′08″N 113°45′58″W / 48.20222°N 113.76611°W / 48.20222; -113.76611 (Lost Island), el. 3,606 feet (1,099 m) ^[99]

Lake Koocanusa

• Cedar Island, Lincoln County, Montana, 48°38′07″N 115°17′48″W / 48.63528°N 115.29667°W / 48.63528; -115.29667 (Cedar Island), el. 2,464 feet (751 m) ^[100]
• Kins Island, Lincoln County, Montana, 48°53′42″N 115°11′44″W / 48.89500°N 115.19556°W / 48.89500; -115.19556 (Kins Island), el. 2,464 feet (751 m) ^[101]
• Murray Island, Lincoln County, Montana, 48°54′11″N 115°11′35″W / 48.90306°N 115.19306°W / 48.90306; -115.19306 (Murray Island), el. 2,464 feet (751 m) ^[102]
• Whites Island, Lincoln County, Montana, 48°56′47″N 115°10′02″W / 48.94639°N 115.16722°W / 48.94639; -115.16722 (Whites Island), el. 2,464 feet (751 m) ^[103]
• Yarnell Island, Lincoln County, Montana, 48°27′30″N 115°17′46″W / 48.45833°N 115.29611°W / 48.45833; -115.29611 (Yarnell Island), el. 2,533 feet (772 m) ^[104]

Other waters west of the divide

• Deer Island, Flathead County, Montana, 48°07′04″N 114°01′59″W / 48.11778°N 114.03306°W / 48.11778; -114.03306 (Deer Island), el. 3,048 feet (929 m) ^[105] in Echo Lake
• Callows Island, Lincoln County, Montana, 48°15′18″N 115°51′09″W / 48.25500°N 115.85250°W / 48.25500; -115.85250 (Callows Island), el. 2,402 feet (732 m) ^[106] in Bull Lake
• Firemens Island, Flathead County, Montana, 48°08′05″N 114°03′23″W / 48.13472°N 114.05639°W / 48.13472; -114.05639 (Firemens Island), el. 3,012 feet (918 m) ^[107] in Echo Lake
• Kelly Island, Missoula County, Montana, 46°51′50″N 114°06′27″W / 46.86389°N 114.10750°W / 46.86389; -114.10750 (Kelly Island), el. 3,113 feet (949 m) ^[108] in the Clark Fork River
• Pleasant Island, Flathead County, Montana, 48°09′59″N 114°21′22″W / 48.16639°N 114.35611°W / 48.16639; -114.35611 (Pleasant Island), el. 3,343 feet (1,019 m) ^[109] in Foy Lake
• Rock Island, Sanders County, Montana, 47°56′26″N 115°42′44″W / 47.94056°N 115.71222°W / 47.94056; -115.71222 (Rock Island), el. 2,336 feet (712 m) ^[110] in Noxon Reservoir
• Scott Island, Lincoln County, Montana, 48°28′48″N 115°53′51″W / 48.48000°N 115.89750°W / 48.48000; -115.89750 (Scott Island), el. 1,857 feet (566 m) ^[111] in the Kootenai River
• Sourdough Island, Missoula County, Montana, 47°06′15″N 113°24′39″W / 47.10417°N 113.41083°W / 47.10417; -113.41083 (Sourdough Island), el. 3,930 feet (1,200 m) ^[112] in Salmon Lake (Montana)
• Steamboat Island, Sanders County, Montana, 47°35′02″N 115°19′40″W / 47.58389°N 115.32778°W / 47.58389; -115.32778 (Steamboat Island), el. 2,405 feet (733 m) ^[113] in the Clark Fork River
• The Island, Flathead County, Montana, 48°26′10″N 114°22′50″W / 48.43611°N 114.38056°W / 48.43611; -114.38056 (The Island), el. 2,999 feet (914 m) ^[114] in Whitefish Lake

Notes