List of islands of Montana
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,, el.
- Baker Bar, Chouteau County, Montana,, el.
- Boggs Island, Chouteau County, Montana,, el.
- Brule Bar, Chouteau County, Montana,, el.
- Buckshot Island, Cascade County, Montana,, el.
- Chelsea Island, Roosevelt County, Montana,, el.
- Council Island, Chouteau County, Montana,, el.
- Cow Island, Blaine County, Montana,, el.
- Crow Coulee Bar, Chouteau County, Montana,, el.
- Duck Island, Valley County, Montana,, el.
- Evans Bend, Chouteau County, Montana,, el.
- Fisher Island, Cascade County, Montana,, el.
- Grand Island, Phillips County, Montana,, el.
- Holmes Council Islands, Fergus County, Montana,, el.
- Iron City Islands, Fergus County, Montana,, el.
- Jones Island, Phillips County, Montana,, el.
- King Island, Fergus County, Montana,, el.
- Lower Two Calf Island, Phillips County, Montana,, el.
- Nelson Island, Cascade County, Montana,, el.
- PN Island, Fergus County, Montana,, el.
- Park Island, Cascade County, Montana,, el.
- Pine Island, Cascade County, Montana,, el.
- Pablo Island, Chouteau County, Montana,, el.
- Roosevelt Island, Chouteau County, Montana,, el.
- Sacajawea Island, Cascade County, Montana,, el.
- Scout Island, Valley County, Montana,, el.
- Shonkin Bar, Chouteau County, Montana,, el.
- Skinners Island, Roosevelt County, Montana,, el.
- Steamboat Island, Cascade County, Montana,, el.
- Sturgeon Island, Blaine County, Montana,, el.
- Taylor Island, Cascade County, Montana,, el.
- Three Islands, Chouteau County, Montana,, el.
- Upper Two Calf Island, Phillips County, Montana,, el.
- White Shield Island, Roosevelt County, Montana,, el.
- Wolf Island, Chouteau County, Montana,, el.
- Yorks Islands, Broadwater County, Montana,, el.
[Yellowstone River]
- Beaver Island, Richland County, Montana,, el.
- Big Marys Island, Yellowstone County, Montana,, el.
- Breakneck Island, Richland County, Montana,, el.
- Buella Island, Richland County, Montana,, el.
- Cherry Island, Yellowstone County, Montana,, el.
- Chrome Island, Wibaux County, Montana,, el.
- Crittenden Island, Richland County, Montana,, el.
- Devils Island, Richland County, Montana,, el.
- Diamond Island, Richland County, Montana,, el.
- Dovers Island, Yellowstone County, Montana,, el.
- Duck Island, Richland County, Montana,, el.
- Elk Island, Richland County, Montana,, el.
- Elms Island, Richland County, Montana,, el.
- Government Island, Yellowstone County, Montana,, el.
- Gros Ventre Island, Richland County, Montana,, el.
- Idiom Island, Richland County, Montana,, el.
- Howery Island, Treasure County, Montana,, el.
- Joes Island, Dawson County, Montana,, el.
- Livingston Island, Park County, Montana,, el.
- Marys Island, Richland County, Montana,, el.
- Monroe Island, Dawson County, Montana,, el.
- Pirogue Island, Custer County, Montana,, el.
- Randalls Island, Yellowstone County, Montana,, el.
- Schaffer Island, Dawson County, Montana,, el.
- Seven Sisters Island, Richland County, Montana,, el.
- Siebeck Island, Park County, Montana,, el.
- Snake Island, Richland County, Montana,, el.
- Spraklin Island, Yellowstone County, Montana,, el.
- Westover Island, Carbon County, Montana,, el.
Other waters east of the divide
- Big Island, Sheridan County, Montana,, el. in Medicine Lake
- Bruces Island, Sheridan County, Montana,, el. in Medicine Lake
- Far West Island, Big Horn County, Montana,, el. in the Big Horn River
- Fire Island, Sweet Grass County, Montana,, el. in the Boulder River
- Gull Island, Sheridan County, Montana,, el. in Medicine Lake
- Long Island, Phillips County, Montana,, el. in Lake Bowdoin
- Lovell Island, Beaverhead County, Montana,, el. in the Beaverhead River
- Pelican Islands, Phillips County, Montana,, el. in Lake Bowdoin
- Smith Island, Beaverhead County, Montana,, el. in the Beaverhead River
- The Island, Carter County, Montana,, el. in the Little Missouri River
- Thunderbird Island, Glacier County, Montana,, el. in Saint Mary Lake
- Youngs Island, Sheridan County, Montana,, el. in Medicine Lake
- Wild Goose Island, Glacier County, Montana,, el. in Saint Mary Lake
- Woody Island, Phillips County, Montana,, el. in Lake Bowdoin
- York Island, Garfield County, Montana,, el. in Fort Peck Lake
Islands west of the Continental Divide
[Flathead Lake]
- Bird Island, Lake County, Montana,, el.
- Bull Island, Lake County, Montana,, el.
- Cedar Island, Lake County, Montana,, el.
- Cromwell Island, Lake County, Montana,, el.
- Douglas Islands, Lake County, Montana,, el.
- Dream Island, Lake County, Montana,, el.
- Goose Island, Lake County, Montana,, el.
- Invitation Island, Flathead County, Montana,, el.
- Melita Island, Lake County, Montana,, el.
- Little Bull Island, Lake County, Montana,, el.
- Mary B Island, Lake County, Montana,, el.
- Rock Island, Lake County, Montana,, el.
- Shelter Island, Lake County, Montana,, el.
- Wild Horse Island, Lake County, Montana,, el.
[Hungry Horse Reservoir]
- Clayton Island, Flathead County, Montana,, el.
- Elk Island, Flathead County, Montana,, el.
- Fire Island, Flathead County, Montana,, el.
- Kelly Island, Flathead County, Montana,, el.
- Lost Island, Flathead County, Montana,, el.
[Lake Koocanusa]
- Cedar Island, Lincoln County, Montana,, el.
- Kins Island, Lincoln County, Montana,, el.
- Murray Island, Lincoln County, Montana,, el.
- Whites Island, Lincoln County, Montana,, el.
- Yarnell Island, Lincoln County, Montana,, el.
Other waters west of the divide
- Deer Island, Flathead County, Montana,, el. in Echo Lake
- Callows Island, Lincoln County, Montana,, el. in Bull Lake
- Firemens Island, Flathead County, Montana,, el. in Echo Lake
- Kelly Island, Missoula County, Montana,, el. in the Clark Fork River
- Pleasant Island, Flathead County, Montana,, el. in Foy Lake
- Rock Island, Sanders County, Montana,, el. in Noxon Reservoir
- Scott Island, Lincoln County, Montana,, el. in the Kootenai River
- Sourdough Island, Missoula County, Montana,, el. in Salmon Lake
- Steamboat Island, Sanders County, Montana,, el. in the Clark Fork River
- The Island, Flathead County, Montana,, el. in Whitefish Lake