- Apostle Islands
- Basswood Island
- Bear Island
- Devils Island
- Cat Island
- Eagle Island
- Gull Island
- Hermit Island
- Ironwood Island
- Long Island
- Madeline Island, population 250
- Manitou Island
- Michigan Island
- North Twin Island
- Oak Island
- Otter Island
- Outer Island
- Raspberry Island
- Rocky Island
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- Apostles (continued)
- Sand Island
- South Twin Island
- Stockton Island
- York Island
- Adventure Island
- The Ansul Islands
- Baker's Island
- Barker's Island
- Bergmann Island
- Brunet Island (part of a State Park)
- Cana Island
- Chambers Island
- Detroit Island
- Doty Island (split between
Neenah and Menasha)
- Green Island
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- Horseshoe Island
- Detroit Island
- Hog Island
- Jones Island, Milwaukee
- Pilot Island
- Doty Island
- Duck Island
- French Island, population 4,410
- Green Island
- Horseshoe Island
- Pilot Island
- Plum Island
- Rock Island
- The Strawberry Islands
- Sugar Island
- Washington Island, population 660
- Willow Island (Wisconsin)
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