List of islands of Montana

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

Missouri River

 * Archers Island, Chouteau County, Montana, 47.94417°N, -110.43778°W, el. 2562 ft
 * Baker Bar, Chouteau County, Montana, 47.83889°N, -110.62056°W, el. 2615 ft
 * Boggs Island, Chouteau County, Montana, 48.01333°N, -110.27389°W, el. 2513 ft
 * Brule Bar, Chouteau County, Montana, 47.87889°N, -110.50278°W, el. 2569 ft
 * Buckshot Island, Cascade County, Montana, 47.43139°N, -111.35556°W, el. 3323 ft
 * Chelsea Island, Roosevelt County, Montana, 48.11444°N, -105.33528°W, el. 1972 ft
 * Council Island, Chouteau County, Montana, 47.73472°N, -109.6125°W, el. 2408 ft
 * Cow Island, Blaine County, Montana, 47.77222°N, -108.94778°W, el. 2293 ft
 * Crow Coulee Bar, Chouteau County, Montana, 47.98722°N, -110.32972°W, el. 2529 ft
 * Duck Island, Valley County, Montana, 48.04972°N, -106.41444°W, el. 2044 ft
 * Evans Bend, Chouteau County, Montana, 47.85222°N, -110.57444°W, el. 2608 ft
 * Fisher Island, Cascade County, Montana, 47.40972°N, -111.30694°W, el. 3333 ft
 * Grand Island, Phillips County, Montana, 47.6975°N, -108.8025°W, el. 2316 ft
 * Holmes Council Islands, Fergus County, Montana, 47.74389°N, -109.55417°W, el. 2398 ft
 * Iron City Islands, Fergus County, Montana, 47.74556°N, -109.52056°W, el. 2388 ft
 * Jones Island, Phillips County, Montana, 47.62361°N, -108.59722°W, el. 2251 ft
 * King Island, Fergus County, Montana, 47.61889°N, -108.6475°W, el. 2260 ft
 * Lower Two Calf Island, Phillips County, Montana, 47.64583°N, -108.76278°W, el. 2277 ft
 * Nelson Island, Cascade County, Montana, 47.34389°N, -111.58694°W, el. 3350 ft
 * PN Island, Fergus County, Montana, 47.73667°N, -109.63806°W, el. 2408 ft
 * Park Island, Cascade County, Montana, 47.48361°N, -111.31472°W, el. 3317 ft
 * Pine Island, Cascade County, Montana, 47.18111°N, -111.80917°W, el. 3379 ft
 * Pablo Island, Chouteau County, Montana, 47.76194°N, -109.91444°W, el. 2467 ft
 * Roosevelt Island, Chouteau County, Montana, 47.80444°N, -110.68972°W, el. 2628 ft
 * Sacajawea Island, Cascade County, Montana, 47.51861°N, -111.305°W, el. 3314 ft
 * Scout Island, Valley County, Montana, 48.03389°N, -106.425°W, el. 2057 ft
 * Shonkin Bar, Chouteau County, Montana, 47.845°N, -110.60111°W, el. 2615 ft
 * Skinners Island, Roosevelt County, Montana, 48.09222°N, -105.11556°W, el. 1952 ft
 * Steamboat Island, Cascade County, Montana, 47.52972°N, -111.24083°W, el. 3251 ft
 * Sturgeon Island, Blaine County, Montana, 47.79889°N, -109.08389°W, el. 2352 ft
 * Taylor Island, Cascade County, Montana, 47.46861°N, -111.31694°W, el. 3323 ft
 * Three Islands, Chouteau County, Montana, 47.97°N, -110.36917°W, el. 2546 ft
 * Upper Two Calf Island, Phillips County, Montana, 47.65639°N, -108.78278°W, el. 2310 ft
 * White Shield Island, Roosevelt County, Montana, 48.08417°N, -105.06083°W, el. 1942 ft
 * Wolf Island, Chouteau County, Montana, 47.73972°N, -109.87778°W, el. 2447 ft
 * Yorks Islands, Broadwater County, Montana, 46.2625°N, -111.49111°W, el. 3855 ft

Yellowstone River

 * Beaver Island, Richland County, Montana, 47.43472°N, -104.33667°W, el. 1965 ft
 * Big Marys Island, Yellowstone County, Montana, 46.00639°N, -107.92972°W, el. 2854 ft
 * Breakneck Island, Richland County, Montana, 47.44639°N, -104.31139°W, el. 1946 ft
 * Buella Island, Richland County, Montana, 47.60639°N, -104.195°W, el. 1913 ft
 * Cherry Island, Yellowstone County, Montana, 45.81667°N, -108.44806°W, el. 3081 ft
 * Chrome Island, Wibaux County, Montana, 47.34528°N, -104.41111°W, el. 1985 ft
 * Crittenden Island, Richland County, Montana, 47.4875°N, -104.28389°W, el. 1932 ft
 * Devils Island, Richland County, Montana, 47.44111°N, -104.33389°W, el. 1946 ft
 * Diamond Island, Richland County, Montana, 47.59361°N, -104.21583°W, el. 1909 ft
 * Dovers Island, Yellowstone County, Montana, 45.85667°N, -108.39194°W, el. 3045 ft
 * Duck Island, Richland County, Montana, 47.41556°N, -104.34306°W, el. 1968 ft
 * Elk Island, Richland County, Montana, 47.47028°N, -104.30611°W, el. 1942 ft
 * Elms Island, Richland County, Montana, 47.40361°N, -104.35194°W, el. 1952 ft
 * Government Island, Yellowstone County, Montana, 46.15694°N, -107.47806°W, el. 2703 ft
 * Gros Ventre Island, Richland County, Montana, 47.37722°N, -104.39528°W, el. 1955 ft
 * Idiom Island, Richland County, Montana, 47.36306°N, -104.39972°W, el. 1972 ft
 * Howery Island, Treasure County, Montana, 46.24722°N, -107.36722°W, el. 2664 ft
 * Joes Island, Dawson County, Montana, 47.26889°N, -104.53167°W, el. 2018 ft
 * Livingston Island, Park County, Montana, 45.66056°N, -110.54528°W, el. 4478 ft
 * Marys Island, Richland County, Montana, 47.38583°N, -104.36944°W, el. 1975 ft
 * Monroe Island, Dawson County, Montana, 46.97222°N, -104.78944°W, el. 2083 ft
 * Pirogue Island, Custer County, Montana, 46.44056°N, -105.81722°W, el. 2349 ft
 * Randalls Island, Yellowstone County, Montana, 46.03333°N, -107.8525°W, el. 2825 ft
 * Schaffer Island, Dawson County, Montana, 47.23194°N, -104.62972°W, el. 2011 ft
 * Seven Sisters Island, Richland County, Montana, 47.56167°N, -104.24444°W, el. 1903 ft
 * Siebeck Island, Park County, Montana, 45.64111°N, -110.56417°W, el. 4505 ft
 * Snake Island, Richland County, Montana, 47.35278°N, -104.41167°W, el. 1985 ft
 * Spraklin Island, Yellowstone County, Montana, 45.92028°N, -108.30833°W, el. 2995 ft
 * Westover Island, Carbon County, Montana, 45.58472°N, -109.07778°W, el. 3451 ft

Other waters east of the divide

 * Big Island, Sheridan County, Montana, 48.44722°N, -104.38333°W, el. 1942 ft in Medicine Lake
 * Bruces Island, Sheridan County, Montana, 48.47389°N, -104.45139°W, el. 1946 ft in Medicine Lake
 * Far West Island, Big Horn County, Montana, 45.63444°N, -107.66722°W, el. 2943 ft in the Big Horn River
 * Fire Island, Sweet Grass County, Montana, 45.82111°N, -109.94944°W, el. 4104 ft in the Boulder River
 * Gull Island, Sheridan County, Montana, 48.45861°N, -104.39194°W, el. 1936 ft in Medicine Lake
 * Long Island, Phillips County, Montana, 48.42306°N, -107.69611°W, el. 2211 ft in Lake Bowdoin
 * Lovell Island, Beaverhead County, Montana, 45.20056°N, -112.68111°W, el. 5138 ft in the Beaverhead River
 * Pelican Islands, Phillips County, Montana, 48.41167°N, -107.67722°W, el. 2211 ft in Lake Bowdoin
 * Smith Island, Beaverhead County, Montana, 45.20556°N, -112.67806°W, el. 5125 ft in the Beaverhead River
 * The Island, Carter County, Montana, 45.38611°N, -104.06833°W, el. 3199 ft in the Little Missouri River
 * Thunderbird Island, Glacier County, Montana, 48.78972°N, -113.41417°W, el. 4488 ft in Saint Mary Lake
 * Youngs Island, Sheridan County, Montana, 48.46361°N, -104.44639°W, el. 1949 ft in Medicine Lake
 * Wild Goose Island, Glacier County, Montana, 48.68889°N, -113.53972°W, el. 4488 ft in Saint Mary Lake
 * Woody Island, Phillips County, Montana, 48.405°N, -107.6825°W, el. 2215 ft in Lake Bowdoin
 * York Island, Garfield County, Montana, 47.93°N, -106.46611°W, el. 2333 ft in Fort Peck Lake

Flathead Lake

 * Bird Island, Lake County, Montana, 47.79972°N, -114.07917°W, el. 2943 ft
 * Bull Island, Lake County, Montana, 47.77056°N, -114.11611°W, el. 2999 ft
 * Cedar Island, Lake County, Montana, 47.89583°N, -114.16611°W, el. 2940 ft
 * Cromwell Island, Lake County, Montana, 47.85028°N, -114.26361°W, el. 3136 ft
 * Douglas Islands, Lake County, Montana, 47.93361°N, -114.16833°W, el. 2897 ft
 * Dream Island, Lake County, Montana, 47.81194°N, -114.23056°W, el. 2930 ft
 * Goose Island, Lake County, Montana, 47.94861°N, -114.17778°W, el. 2897 ft
 * Invitation Island, Flathead County, Montana, 48.07083°N, -114.21694°W, el. 2897 ft
 * Melita Island, Lake County, Montana, 47.82139°N, -114.23556°W, el. 2936 ft
 * Little Bull Island, Lake County, Montana, 47.76806°N, -114.125°W, el. 2963 ft
 * Mary B Island, Lake County, Montana, 47.92528°N, -114.16889°W, el. 2897 ft
 * Rock Island, Lake County, Montana, 47.89472°N, -114.17139°W, el. 2910 ft
 * Shelter Island, Lake County, Montana, 47.89556°N, -114.17417°W, el. 2943 ft
 * Wild Horse Island, Lake County, Montana, 47.84528°N, -114.215°W, el. 3494 ft

Hungry Horse Reservoir

 * Clayton Island, Flathead County, Montana, 48.23972°N, -113.83611°W, el. 3642 ft
 * Elk Island, Flathead County, Montana, 48.24028°N, -113.79806°W, el. 3596 ft
 * Fire Island, Flathead County, Montana, 48.29528°N, -113.89694°W, el. 3602 ft
 * Kelly Island, Flathead County, Montana, 48.26528°N, -113.82167°W, el. 3602 ft
 * Lost Island, Flathead County, Montana, 48.20222°N, -113.76611°W, el. 3606 ft

Lake Koocanusa

 * Cedar Island, Lincoln County, Montana, 48.63528°N, -115.29667°W, el. 2464 ft
 * Kins Island, Lincoln County, Montana, 48.895°N, -115.19556°W, el. 2464 ft
 * Murray Island, Lincoln County, Montana, 48.90306°N, -115.19306°W, el. 2464 ft
 * Whites Island, Lincoln County, Montana, 48.94639°N, -115.16722°W, el. 2464 ft
 * Yarnell Island, Lincoln County, Montana, 48.45833°N, -115.29611°W, el. 2533 ft

Other waters west of the divide

 * Deer Island, Flathead County, Montana, 48.11778°N, -114.03306°W, el. 3048 ft in Echo Lake
 * Callows Island, Lincoln County, Montana, 48.255°N, -115.8525°W, el. 2402 ft in Bull Lake
 * Firemens Island, Flathead County, Montana, 48.13472°N, -114.05639°W, el. 3012 ft in Echo Lake
 * Kelly Island, Missoula County, Montana, 46.86389°N, -114.1075°W, el. 3113 ft in the Clark Fork River
 * Pleasant Island, Flathead County, Montana, 48.16639°N, -114.35611°W, el. 3343 ft in Foy Lake
 * Rock Island, Sanders County, Montana, 47.94056°N, -115.71222°W, el. 2336 ft in Noxon Reservoir
 * Scott Island, Lincoln County, Montana, 48.48°N, -115.8975°W, el. 1857 ft in the Kootenai River
 * Sourdough Island, Missoula County, Montana, 47.10417°N, -113.41083°W, el. 3930 ft in Salmon Lake (Montana)
 * Steamboat Island, Sanders County, Montana, 47.58389°N, -115.32778°W, el. 2405 ft in the Clark Fork River
 * The Island, Flathead County, Montana, 48.43611°N, -114.38056°W, el. 2999 ft in Whitefish Lake