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

Islands east of the Continental Divide[edit]

Missouri River[edit]

• 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[edit]

• 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[edit]

• 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[edit]

Flathead Lake[edit]

• 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[edit]

• 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[edit]

• 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[edit]

• 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[edit]