# List of islands of Wisconsin

The following is a list of named islands of the state of Wisconsin. According to the USGS, there are 431 named islands, and many more unnamed ones among Wisconsin's 15,074 lakes. Wisconsin borders both Lake Michigan and Lake Superior producing many of the state's islands. The Mississippi River also has many islands on the state's western boundary. Wisconsin has many rivers including the Wisconsin River and Fox River.

## Great Lakes
### Lake Michigan

Many of the Wisconsin's islands in Lake Michigan are around the Door Peninsula. Islands in Green Bay include those in and around the Green Bay Breakwater. Washington Island is Wisconsin's largest in Lake Michigan and also has a year-round population of 708 as of the 2010 census. The island has a ferry service and operates Washington Island Airport for air travel. Rock Island is a state park that can only be accessed by ferry from Washington Island. Plum Island is home to a former Coast Guard Life-Saving Station and historic range lights. The islands surrounding the northern part of the peninsula are outcroppings of the Niagara Escarpment.
| Island Name | County | Area (acres) | Area (hectares) | Area (sq mi) | Coordinates |
| Adventure Island | Door | 40 | 16 | 0.06 | 45°09′32″N 87°15′55″W﻿ / ﻿45.15889°N 87.26528°W﻿ / 45.15889; -87.26528﻿ (Adventure Island) |
| Big Sister Island | Door | 5.4 | 2.2 | 0.01 | 45°13′30″N 87°08′53″W﻿ / ﻿45.22500°N 87.14806°W﻿ / 45.22500; -87.14806﻿ (Big Sister Island) |
| Big Susie Island | Door | 11.5 | 4.7 | 0.02 | 45°20′57″N 86°55′56″W﻿ / ﻿45.34917°N 86.93222°W﻿ / 45.34917; -86.93222﻿ (Big Susie Island) |
| Birds Tree Island | Brown | 0.6 | 0.24 | <0.01 | 44°33′32″N 87°59′37″W﻿ / ﻿44.55889°N 87.99361°W﻿ / 44.55889; -87.99361﻿ (Birds Tree Island) |
| Cana Island | Door | 8.7 | 3.5 | 0.01 | 45°05′17″N 87°02′58″W﻿ / ﻿45.08806°N 87.04944°W﻿ / 45.08806; -87.04944﻿ (Cana Island) |
| Cat Island | Brown | 1.6 | 0.65 | <0.01 | 44°33′36″N 88°00′06″W﻿ / ﻿44.56000°N 88.00167°W﻿ / 44.56000; -88.00167﻿ (Cat Island) |
| Chambers Island | Door | 2,483 | 1,005 | 3.88 | 45°10′56″N 87°21′19″W﻿ / ﻿45.18222°N 87.35528°W﻿ / 45.18222; -87.35528﻿ (Chambers Island) |
| Detroit Island | Door | 637 | 258 | 1.00 | 45°19′17″N 86°54′58″W﻿ / ﻿45.32139°N 86.91611°W﻿ / 45.32139; -86.91611﻿ (Detroit Island) |
| Fish Island | Door | 1.5 | 0.61 | <0.01 | 45°23′40″N 86°45′52″W﻿ / ﻿45.39444°N 86.76444°W﻿ / 45.39444; -86.76444﻿ (Fish Island) |
| Grassy Island | Brown | 2.6 | 1.1 | <0.01 | 44°33′23″N 87°59′29″W﻿ / ﻿44.55639°N 87.99139°W﻿ / 44.55639; -87.99139﻿ (Grassy Island) |
| Gravel Island | Door | 4.0 | 1.6 | 0.01 | 45°15′13″N 86°57′46″W﻿ / ﻿45.25361°N 86.96278°W﻿ / 45.25361; -86.96278﻿ (Gravel Island) |
| Green Island | Marinette | 19 | 7.7 | 0.03 | 45°03′31″N 87°29′46″W﻿ / ﻿45.05861°N 87.49611°W﻿ / 45.05861; -87.49611﻿ (Green Island) |
| Hat Island | Door | 8.0 | 3.2 | 0.01 | 45°06′08″N 87°19′04″W﻿ / ﻿45.10222°N 87.31778°W﻿ / 45.10222; -87.31778﻿ (Hat Island) |
| Hog Island | Door | 2.1 | 0.85 | <0.01 | 45°21′26″N 86°51′05″W﻿ / ﻿45.35722°N 86.85139°W﻿ / 45.35722; -86.85139﻿ (Hog Island) |
| Horseshoe Island | Door | 32 | 13 | 0.05 | 45°10′44″N 87°12′33″W﻿ / ﻿45.17889°N 87.20917°W﻿ / 45.17889; -87.20917﻿ (Horseshoe Island) |
| Jack Island | Door | 2.5 | 1.0 | <0.01 | 45°10′24″N 87°15′58″W﻿ / ﻿45.17333°N 87.26611°W﻿ / 45.17333; -87.26611﻿ (Jack Island) |
| Little Sister Island | Door | 3.1 | 1.3 | <0.01 | 45°13′22″N 87°08′33″W﻿ / ﻿45.22278°N 87.14250°W﻿ / 45.22278; -87.14250﻿ (Little Sister Island) |
| Little Strawberry Island | Door | 3.0 | 1.2 | <0.01 | 45°09′59″N 87°16′10″W﻿ / ﻿45.16639°N 87.26944°W﻿ / 45.16639; -87.26944﻿ (Little Strawberry Island) |
| Little Susie Island | Door | 2.2 | 0.89 | <0.01 | 45°20′52″N 86°55′57″W﻿ / ﻿45.34778°N 86.93250°W﻿ / 45.34778; -86.93250﻿ (Little Susie Island) |
| Pilot Island | Door | 6.2 | 2.5 | 0.01 | 45°17′06″N 86°55′11″W﻿ / ﻿45.28500°N 86.91972°W﻿ / 45.28500; -86.91972﻿ (Pilot Island) |
| Pirate Island | Door | 2.9 | 1.2 | <0.01 | 45°10′38″N 87°15′29″W﻿ / ﻿45.17722°N 87.25806°W﻿ / 45.17722; -87.25806﻿ (Pirate Island) |
| Plum Island | Door | 291 | 118 | 0.46 | 45°18′29″N 86°57′11″W﻿ / ﻿45.30806°N 86.95306°W﻿ / 45.30806; -86.95306﻿ (Plum Island) |
| Rock Island | Door | 975 | 395 | 1.52 | 45°24′55″N 86°49′15″W﻿ / ﻿45.41528°N 86.82083°W﻿ / 45.41528; -86.82083﻿ (Rock Island) |
| Snake Island (Town of Nasewaupee) | Door | 26 | 11 | 0.04 | 44°52′17″N 87°31′04″W﻿ / ﻿44.87139°N 87.51778°W﻿ / 44.87139; -87.51778﻿ (Snake Island ) |
| Snake Island (Town of Washington) | Door | 1.4 | 0.57 | <0.01 | 45°21′03″N 86°55′27″W﻿ / ﻿45.35083°N 86.92417°W﻿ / 45.35083; -86.92417﻿ (Snake Island ) |
| Spider Island | Door | 23 | 9.3 | 0.04 | 45°12′34″N 86°58′33″W﻿ / ﻿45.20944°N 86.97583°W﻿ / 45.20944; -86.97583﻿ (Spider Island) |
| Squaw Island | Door | 6.2 | 2.5 | 0.01 | 44°50′06″N 87°33′22″W﻿ / ﻿44.83500°N 87.55611°W﻿ / 44.83500; -87.55611﻿ (Squaw Island) |
| Texas Rock | Milwaukee | See below note* | See below note* | See below note* | 42°59′27″N 87°52′28″W﻿ / ﻿42.99083°N 87.87444°W﻿ / 42.99083; -87.87444﻿ (Texas Rock) |
| Washington Island | Door | 15,046 | 6,089 | 23.51 | 45°22′37″N 86°53′47″W﻿ / ﻿45.37694°N 86.89639°W﻿ / 45.37694; -86.89639﻿ (Washington Island) |
| Willow Island | Brown | 1.1 | 0.45 | <0.01 | 44°33′49″N 87°59′56″W﻿ / ﻿44.56361°N 87.99889°W﻿ / 44.56361; -87.99889﻿ (Willow Island) |
* Texas Rock is officially classified as an island, but is only above the surface of the water with very low water levels.

### Lake Superior

Wisconsin's northernmost point is on Devils Island, part of the Apostle Islands in Lake Superior. It has a population of 302 as of the 2010 census. It can be reached by ferry and airplanes at Major Gilbert Field Airport. The Islands are part of the Apostle Islands National Lakeshore and are featured in Wisconsin's America the Beautiful quarter.
| Island Name | County | Area (acres) | Area (hectares) | Area (sq mi) | Coordinates |
| Barker's Island | Douglas | 55 | 22 | 0.09 | 46°43′09″N 92°03′26″W﻿ / ﻿46.71917°N 92.05722°W﻿ / 46.71917; -92.05722﻿ (Barker's Island) |
| Basswood Island | Ashland | 1,914 | 775 | 2.99 | 46°51′01″N 90°44′47″W﻿ / ﻿46.85028°N 90.74639°W﻿ / 46.85028; -90.74639﻿ (Basswood Island) |
| Bear Island | Ashland | 1,814 | 734 | 2.83 | 47°00′58″N 90°45′28″W﻿ / ﻿47.01611°N 90.75778°W﻿ / 47.01611; -90.75778﻿ (Bear Island) |
| Cat Island | Ashland | 1,339 | 542 | 2.09 | 47°00′48″N 90°33′33″W﻿ / ﻿47.01333°N 90.55917°W﻿ / 47.01333; -90.55917﻿ (Cat Island) |
| Devils Island | Ashland | 310 | 130 | 0.48 | 47°04′17″N 90°43′36″W﻿ / ﻿47.07139°N 90.72667°W﻿ / 47.07139; -90.72667﻿ (Devils Island) |
| Eagle Island | Bayfield | 28 | 11 | 0.04 | 46°56′38″N 91°02′11″W﻿ / ﻿46.94389°N 91.03639°W﻿ / 46.94389; -91.03639﻿ (Eagle Island) |
| Gull Island | Ashland | 3.5 | 1.4 | 0.01 | 46°54′25″N 90°26′33″W﻿ / ﻿46.90694°N 90.44250°W﻿ / 46.90694; -90.44250﻿ (Gull Island) |
| Hermit Island | Ashland | 788 | 319 | 1.23 | 46°53′12″N 90°41′07″W﻿ / ﻿46.88667°N 90.68528°W﻿ / 46.88667; -90.68528﻿ (Hermit Island) |
| Hog Island | Douglas | 55 | 22 | 0.09 | 46°42′16″N 92°02′10″W﻿ / ﻿46.70444°N 92.03611°W﻿ / 46.70444; -92.03611﻿ (Hog Island) |
| Ironwood Island | Ashland | 666 | 270 | 1.04 | 47°00′01″N 90°36′56″W﻿ / ﻿47.00028°N 90.61556°W﻿ / 47.00028; -90.61556﻿ (Ironwood Island) |
| Long Island | Ashland | 309 | 125 | 0.48 | 46°43′37″N 90°47′06″W﻿ / ﻿46.72694°N 90.78500°W﻿ / 46.72694; -90.78500﻿ (Long Island) |
| Madeline Island | Ashland | 15,359 | 6,216 | 24.00 | 46°48′59″N 90°41′21″W﻿ / ﻿46.81639°N 90.68917°W﻿ / 46.81639; -90.68917﻿ (Madeline Island) |
| Manitou Island | Ashland | 1,325 | 536 | 2.07 | 46°57′56″N 90°39′26″W﻿ / ﻿46.96556°N 90.65722°W﻿ / 46.96556; -90.65722﻿ (Manitou Island) |
| Michigan Island | Ashland | 1,539 | 623 | 2.40 | 46°52′55″N 90°29′16″W﻿ / ﻿46.88194°N 90.48778°W﻿ / 46.88194; -90.48778﻿ (Michigan Island) |
| North Twin Island | Ashland | 166 | 67 | 0.26 | 47°04′04″N 90°35′14″W﻿ / ﻿47.06778°N 90.58722°W﻿ / 47.06778; -90.58722﻿ (North Twin Island) |
| Oak Island | Ashland | 5,024 | 2,033 | 7.85 | 46°56′14″N 90°43′42″W﻿ / ﻿46.93722°N 90.72833°W﻿ / 46.93722; -90.72833﻿ (Oak Island) |
| Otter Island | Ashland | 1,323 | 535 | 2.07 | 46°59′46″N 90°41′28″W﻿ / ﻿46.99611°N 90.69111°W﻿ / 46.99611; -90.69111﻿ (Otter Island) |
| Outer Island | Ashland | 7,861 | 3,181 | 12.28 | 47°02′07″N 90°25′52″W﻿ / ﻿47.03528°N 90.43111°W﻿ / 47.03528; -90.43111﻿ (Outer Island) |
| Raspberry Island | Bayfield | 288 | 117 | 0.45 | 46°58′31″N 90°47′40″W﻿ / ﻿46.97528°N 90.79444°W﻿ / 46.97528; -90.79444﻿ (Raspberry Island) |
| Rocky Island | Ashland | 1,049 | 425 | 1.64 | 47°02′21″N 90°40′44″W﻿ / ﻿47.03917°N 90.67889°W﻿ / 47.03917; -90.67889﻿ (Rocky Island) |
| Sand Island | Bayfield | 2,859 | 1,157 | 4.47 | 46°58′45″N 90°56′55″W﻿ / ﻿46.97917°N 90.94861°W﻿ / 46.97917; -90.94861﻿ (Sand Island) |
| South Twin Island | Ashland | 336 | 136 | 0.53 | 47°02′00″N 90°38′41″W﻿ / ﻿47.03333°N 90.64472°W﻿ / 47.03333; -90.64472﻿ (South Twin Island) |
| Stockton Island | Ashland | 9,892 | 4,003 | 15.46 | 46°56′17″N 90°34′43″W﻿ / ﻿46.93806°N 90.57861°W﻿ / 46.93806; -90.57861﻿ (Stockton Island) |
| York Island | Bayfield | 274 | 111 | 0.43 | 46°58′59″N 90°51′49″W﻿ / ﻿46.98306°N 90.86361°W﻿ / 46.98306; -90.86361﻿ (York Island) |

## Inland Lake and River Islands

There are 377 named islands in inland lakes, rivers and marshes, and many more unnamed islands. Over half of the named islands are in the Mississippi River, Wisconsin River, Beaver Dam Lake or Horicon Marsh.
| Island Name | County | Body of Water | Area (sq mi) | Area (km$^2$) | Coordinates |
| Ajax Island | Oconto | Oconto River | 0.03 | 0.078 | 44°53′03″N 87°51′23″W﻿ / ﻿44.88417°N 87.85639°W﻿ / 44.88417; -87.85639﻿ (Ajax Island) |
| Allen Island | Crawford | Wisconsin River | 0.34 | 0.88 | 43°07′50″N 90°44′33″W﻿ / ﻿43.13056°N 90.74250°W﻿ / 43.13056; -90.74250﻿ (Allen Island) |
| Ames Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°30′05″N 88°40′57″W﻿ / ﻿43.50139°N 88.68250°W﻿ / 43.50139; -88.68250﻿ (Ames Island) |
| Amik Island | Douglas | Saint Louis River | 0.01 | 0.026 | 46°39′22″N 92°16′44″W﻿ / ﻿46.65611°N 92.27889°W﻿ / 46.65611; -92.27889﻿ (Amik Island) |
| Anchor Island | Iron | Pine Lake | <0.01 | <0.026 | 46°15′56″N 90°08′28″W﻿ / ﻿46.26556°N 90.14111°W﻿ / 46.26556; -90.14111﻿ (Anchor Island) |
| Anderson Island | Bayfield | Namekagon Lake | 0.13 | 0.34 | 46°13′44″N 91°05′31″W﻿ / ﻿46.22889°N 91.09194°W﻿ / 46.22889; -91.09194﻿ (Anderson Island) |
| Ansul Islands | Marinette | Menominee River | 0.12 | 0.31 | 45°07′07″N 87°40′22″W﻿ / ﻿45.11861°N 87.67278°W﻿ / 45.11861; -87.67278﻿ (Ansul Islands) |
| Anthony Island | Dodge | Sinnissippi Lake | 0.05 | 0.13 | 43°21′24″N 88°36′01″W﻿ / ﻿43.35667°N 88.60028°W﻿ / 43.35667; -88.60028﻿ (Anthony Island) |
| Antigo Island | Oneida | Pelican Lake | 0.04 | 0.10 | 45°29′35″N 89°11′39″W﻿ / ﻿45.49306°N 89.19417°W﻿ / 45.49306; -89.19417﻿ (Antigo Island) |
| Apple Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°30′53″N 88°39′33″W﻿ / ﻿43.51472°N 88.65917°W﻿ / 43.51472; -88.65917﻿ (Apple Island) |
| Arrowhead Island | La Crosse | Mississippi River | 0.01 | 0.026 | 43°53′58″N 91°17′11″W﻿ / ﻿43.89944°N 91.28639°W﻿ / 43.89944; -91.28639﻿ (Arrowhead Island) |
| Babbs Island | Sawyer | Flambeau River | 0.01 | 0.026 | 45°46′09″N 90°45′17″W﻿ / ﻿45.76917°N 90.75472°W﻿ / 45.76917; -90.75472﻿ (Babbs Island) |
| Babe Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′43″N 88°52′12″W﻿ / ﻿43.46194°N 88.87000°W﻿ / 43.46194; -88.87000﻿ (Babe Island) |
| Baby Fourmile Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°29′19″N 88°37′42″W﻿ / ﻿43.48861°N 88.62833°W﻿ / 43.48861; -88.62833﻿ (Baby Fourmile Island) |
| Baker Island | Marinette | Menominee River | 0.01 | 0.026 | 45°20′54″N 87°45′24″W﻿ / ﻿45.34833°N 87.75667°W﻿ / 45.34833; -87.75667﻿ (Baker Island) |
| Bald Eagle Island | Polk | Bone Lake | 0.02 | 0.052 | 45°31′43″N 92°23′17″W﻿ / ﻿45.52861°N 92.38806°W﻿ / 45.52861; -92.38806﻿ (Bald Eagle Island) |
| Balls Island | Grant | Mississippi River | 0.10 | 0.26 | 42°40′11″N 90°51′39″W﻿ / ﻿42.66972°N 90.86083°W﻿ / 42.66972; -90.86083﻿ (Balls Island) |
| Barkers Island | Marathon | Wisconsin River | 0.02 | 0.052 | 44°57′48″N 89°37′59″W﻿ / ﻿44.96333°N 89.63306°W﻿ / 44.96333; -89.63306﻿ (Barkers Island) |
| Barron Island | La Crosse | Mississippi River | 0.44 | 1.1 | 43°48′55″N 91°15′50″W﻿ / ﻿43.81528°N 91.26389°W﻿ / 43.81528; -91.26389﻿ (Barron Island) |
| Bass Island | Florence | Bass Lake | <0.01 | <0.026 | 45°53′22″N 88°08′15″W﻿ / ﻿45.88944°N 88.13750°W﻿ / 45.88944; -88.13750﻿ (Bass Island) |
| Battle Island | Buffalo | Chippewa River | 0.07 | 0.18 | 44°28′40″N 92°03′25″W﻿ / ﻿44.47778°N 92.05694°W﻿ / 44.47778; -92.05694﻿ (Battle Island) |
| Battle Island | Vernon | Mississippi River | 0.05 | 0.13 | 43°27′29″N 91°13′49″W﻿ / ﻿43.45806°N 91.23028°W﻿ / 43.45806; -91.23028﻿ (Battle Island) |
| Bear Island | Polk | Balsam Lake | <0.01 | <0.026 | 45°27′46″N 92°26′24″W﻿ / ﻿45.46278°N 92.44000°W﻿ / 45.46278; -92.44000﻿ (Bear Island) |
| Bedker Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°31′08″N 88°57′17″W﻿ / ﻿43.51889°N 88.95472°W﻿ / 43.51889; -88.95472﻿ (Bedker Island) |
| Beggs Island | Waukesha | Lac La Belle | 0.01 | 0.026 | 43°07′30″N 88°30′32″W﻿ / ﻿43.12500°N 88.50889°W﻿ / 43.12500; -88.50889﻿ (Beggs Island) |
| Bell Island | La Crosse | Mississippi River | ? | ? | 43°53′38″N 91°15′22″W﻿ / ﻿43.89389°N 91.25611°W﻿ / 43.89389; -91.25611﻿ (Bell Island) |
| Bell Island | Columbia | Lake Wisconsin | <0.01 | <0.026 | 43°21'20.5"N 89°38'04.0"W |
| Belle Island | Vilas | Mamie Lake | 0.01 | 0.026 | 46°11′38″N 89°23′54″W﻿ / ﻿46.19389°N 89.39833°W﻿ / 46.19389; -89.39833﻿ (Belle Island) |
| Belle Island | Wood | Wisconsin River | 0.01 | 0.026 | 44°23′13″N 89°49′55″W﻿ / ﻿44.38694°N 89.83194°W﻿ / 44.38694; -89.83194﻿ (Belle Island) |
| Bergman Island | Crawford | Mississippi River | 0.02 | 0.052 | 43°01′08″N 91°09′37″W﻿ / ﻿43.01889°N 91.16028°W﻿ / 43.01889; -91.16028﻿ (Bergman Island) |
| Bertom Island | Grant | McCartney Lake | 0.04 | 0.10 | 42°40′57″N 90°52′00″W﻿ / ﻿42.68250°N 90.86667°W﻿ / 42.68250; -90.86667﻿ (Bertom Island) |
| Beulah Island | Walworth | Lake Beulah | 0.05 | 0.13 | 42°49′59″N 88°22′52″W﻿ / ﻿42.83306°N 88.38111°W﻿ / 42.83306; -88.38111﻿ (Beulah Island) |
| Big Banana Island | Sawyer | Chippewa Flowage | 0.13 | 0.34 | 45°55′53″N 91°13′57″W﻿ / ﻿45.93139°N 91.23250°W﻿ / 45.93139; -91.23250﻿ (Big Banana Island) |
| Big Island | Burnett | Saint Croix River | 0.69 | 1.8 | 46°04′50″N 92°13′28″W﻿ / ﻿46.08056°N 92.22444°W﻿ / 46.08056; -92.22444﻿ (Big Island) |
| Big Island | Iron | Turtle-Flambeau Flowage | 3.53 | 9.1 | 46°05′45″N 90°13′08″W﻿ / ﻿46.09583°N 90.21889°W﻿ / 46.09583; -90.21889﻿ (Big Island) |
| Big Island | Marathon | Wisconsin River | 0.64 | 1.7 | 44°44′25″N 89°43′50″W﻿ / ﻿44.74028°N 89.73056°W﻿ / 44.74028; -89.73056﻿ (Big Island) |
| Big Island | Oneida | Squash Lake | <0.01 | <0.026 | 45°36′08″N 89°33′03″W﻿ / ﻿45.60222°N 89.55083°W﻿ / 45.60222; -89.55083﻿ (Big Island) |
| Big Island | Polk | Balsam Lake | 0.06 | 0.16 | 45°27′48″N 92°26′00″W﻿ / ﻿45.46333°N 92.43333°W﻿ / 45.46333; -92.43333﻿ (Big Island) |
| Big Island | Richland | Wisconsin River | 0.12 | 0.31 | 43°11′00″N 90°37′56″W﻿ / ﻿43.18333°N 90.63222°W﻿ / 43.18333; -90.63222﻿ (Big Island) |
| Big Island | Sawyer | Nelson Lake | 0.92 | 2.4 | 46°05′20″N 91°27′51″W﻿ / ﻿46.08889°N 91.46417°W﻿ / 46.08889; -91.46417﻿ (Big Island) |
| Big Island | Wood | Wisconsin River | 0.46 | 1.2 | 44°24′56″N 89°48′27″W﻿ / ﻿44.41556°N 89.80750°W﻿ / 44.41556; -89.80750﻿ (Big Island) |
| Big Ripley Island | Oneida | Kawaguesaga Lake | 0.03 | 0.078 | 45°52′20″N 89°44′27″W﻿ / ﻿45.87222°N 89.74083°W﻿ / 45.87222; -89.74083﻿ (Big Ripley Island) |
| Big Skunk Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°29′18″N 88°51′16″W﻿ / ﻿43.48833°N 88.85444°W﻿ / 43.48833; -88.85444﻿ (Big Skunk Island) |
| Big Timber Island | Sawyer | Chippewa Flowage | 0.50 | 1.3 | 45°55′40″N 91°07′49″W﻿ / ﻿45.92778°N 91.13028°W﻿ / 45.92778; -91.13028﻿ (Big Timber Island) |
| Birch Island | Sawyer | Chippewa Flowage | 0.01 | 0.026 | 45°56′00″N 91°13′11″W﻿ / ﻿45.93333°N 91.21972°W﻿ / 45.93333; -91.21972﻿ (Birch Island) |
| Bird Island | Sawyer | Teal Lake | <0.01 | <0.026 | 46°04′42″N 91°06′25″W﻿ / ﻿46.07833°N 91.10694°W﻿ / 46.07833; -91.10694﻿ (Bird Island) |
| Black Oak Island | Trempealeau | Mississippi River | 0.05 | 0.13 | 44°02′08″N 91°30′34″W﻿ / ﻿44.03556°N 91.50944°W﻿ / 44.03556; -91.50944﻿ (Black Oak Island) |
| Blackbird Island | Winnebago | Lake Winnebago | <0.01 | <0.026 | 44°06′45″N 88°27′42″W﻿ / ﻿44.11250°N 88.46167°W﻿ / 44.11250; -88.46167﻿ (Blackbird Island) |
| Blackhawk Island | Juneau | Wisconsin River | 0.28 | 0.73 | 43°39′00″N 89°47′35″W﻿ / ﻿43.65000°N 89.79306°W﻿ / 43.65000; -89.79306﻿ (Blackhawk Island) |
| Blueberry Island | Marinette | Menominee River | 0.01 | 0.026 | 45°06′28″N 87°39′06″W﻿ / ﻿45.10778°N 87.65167°W﻿ / 45.10778; -87.65167﻿ (Blueberry Island) |
| Bonies Mound | Iron | Turtle-Flambeau Flowage | <0.01 | <0.026 | 46°05′16″N 90°06′35″W﻿ / ﻿46.08778°N 90.10972°W﻿ / 46.08778; -90.10972﻿ (Bonies Mound) |
| Boom Island | Marinette | Menominee River | 0.01 | 0.026 | 45°06′18″N 87°37′54″W﻿ / ﻿45.10500°N 87.63167°W﻿ / 45.10500; -87.63167﻿ (Boom Island) |
| Wet Beard Island | Winnebago | Wolf River | 0.01 | 0.026 | 44°11′54″N 88°49′07″W﻿ / ﻿44.19833°N 88.81861°W﻿ / 44.19833; -88.81861﻿ (Boom Island) |
| Boomerang Island | Vernon | Mississippi River | 0.03 | 0.078 | 43°39′39″N 91°14′52″W﻿ / ﻿43.66083°N 91.24778°W﻿ / 43.66083; -91.24778﻿ (Boomerang Island) |
| Bradys Island | Barron | Hemlock Lake | <0.01 | <0.026 | 45°34′09″N 91°34′06″W﻿ / ﻿45.56917°N 91.56833°W﻿ / 45.56917; -91.56833﻿ (Bradys Island) |
| Brecker Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°29′10″N 88°39′36″W﻿ / ﻿43.48611°N 88.66000°W﻿ / 43.48611; -88.66000﻿ (Brecker Island) |
| Broken Bow Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°39′28″N 91°16′01″W﻿ / ﻿43.65778°N 91.26694°W﻿ / 43.65778; -91.26694﻿ (Broken Bow Island) |
| Broken Gun Island | La Crosse | Mississippi River | 0.01 | 0.026 | 43°54′47″N 91°17′22″W﻿ / ﻿43.91306°N 91.28944°W﻿ / 43.91306; -91.28944﻿ (Broken Gun Island) |
| Brunet Island | Chippewa | Cornell Flowage | 0.27 | 0.70 | 45°10′58″N 91°10′04″W﻿ / ﻿45.18278°N 91.16778°W﻿ / 45.18278; -91.16778﻿ (Brunet Island) |
| Brush Island | Dunn | Chippewa River | 0.65 | 1.7 | 44°45′13″N 91°44′11″W﻿ / ﻿44.75361°N 91.73639°W﻿ / 44.75361; -91.73639﻿ (Brush Island) |
| Brushwood Island | Dodge | Fox Lake | 0.02 | 0.052 | 43°35′15″N 88°54′43″W﻿ / ﻿43.58750°N 88.91194°W﻿ / 43.58750; -88.91194﻿ (Brushwood Island) |
| Bubar Island | Douglas | Saint Croix Flowage | 0.45 | 1.2 | 46°15′07″N 91°53′03″W﻿ / ﻿46.25194°N 91.88417°W﻿ / 46.25194; -91.88417﻿ (Bubar Island) |
| Buckeye Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′59″N 88°52′19″W﻿ / ﻿43.46639°N 88.87194°W﻿ / 43.46639; -88.87194﻿ (Buckeye Island) |
| Bucks Island | Buffalo | Mississippi River | 0.01 | 0.026 | 44°13′41″N 91°52′02″W﻿ / ﻿44.22806°N 91.86722°W﻿ / 44.22806; -91.86722﻿ (Bucks Island) |
| Buffalo Island | Buffalo | Chippewa River | 0.28 | 0.73 | 44°35′07″N 92°01′26″W﻿ / ﻿44.58528°N 92.02389°W﻿ / 44.58528; -92.02389﻿ (Buffalo Island) |
| Bullrush Island | Buffalo | Mississippi River | 0.02 | 0.052 | 44°12′05″N 91°50′38″W﻿ / ﻿44.20139°N 91.84389°W﻿ / 44.20139; -91.84389﻿ (Bullrush Island) |
| Bunyans Hat Island | Rusk | Dairyland Reservoir | 0.03 | 0.078 | 45°29′44″N 91°01′24″W﻿ / ﻿45.49556°N 91.02333°W﻿ / 45.49556; -91.02333﻿ (Bunyans Hat Island) |
| Butternut Island | Dodge | Sinnissippi Lake | 0.05 | 0.13 | 43°22′46″N 88°37′15″W﻿ / ﻿43.37944°N 88.62083°W﻿ / 43.37944; -88.62083﻿ (Butternut Island) |
| Carlson Island | Polk | Balsam Lake | 0.02 | 0.052 | 45°28′01″N 92°25′49″W﻿ / ﻿45.46694°N 92.43028°W﻿ / 45.46694; -92.43028﻿ (Carlson Island) |
| Cedar Island | Iowa | Wisconsin River | 0.70 | 1.8 | 43°11′04″N 89°54′41″W﻿ / ﻿43.18444°N 89.91139°W﻿ / 43.18444; -89.91139﻿ (Cedar Island) |
| Cedar Island | Polk | Balsam Lake | <0.01 | <0.026 | 45°27′44″N 92°26′51″W﻿ / ﻿45.46222°N 92.44750°W﻿ / 45.46222; -92.44750﻿ (Cedar Island) |
| Champaign Island | Bayfield | Namekagon Lake | <0.01 | <0.026 | 46°12′35″N 91°06′34″W﻿ / ﻿46.20972°N 91.10944°W﻿ / 46.20972; -91.10944﻿ (Champaign Island) |
| Chippewa Island | Dunn | Chippewa River | 1.28 | 3.3 | 44°45′08″N 91°48′01″W﻿ / ﻿44.75222°N 91.80028°W﻿ / 44.75222; -91.80028﻿ (Chippewa Island) |
| Clare Island | Sauk | Lake Delton | <0.01 | <0.026 | 43°36′23″N 89°46′49″W﻿ / ﻿43.60639°N 89.78028°W﻿ / 43.60639; -89.78028﻿ (Clare Island) |
| Clark Island | Adams & Juneau | Wisconsin River | 0.27 | 0.70 | 43°43′32″N 89°50′07″W﻿ / ﻿43.72556°N 89.83528°W﻿ / 43.72556; -89.83528﻿ (Clark Island) |
| Clough Island | Douglas | Saint Louis River | 0.56 | 1.5 | 46°42′10″N 92°11′21″W﻿ / ﻿46.70278°N 92.18917°W﻿ / 46.70278; -92.18917﻿ (Clough Island) |
| Clubhouse Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°29′34″N 88°39′58″W﻿ / ﻿43.49278°N 88.66611°W﻿ / 43.49278; -88.66611﻿ (Clubhouse Island) |
| Clumbs Island | Oneida | Lake Minocqua | <0.01 | <0.026 | 45°52′42″N 89°41′45″W﻿ / ﻿45.87833°N 89.69583°W﻿ / 45.87833; -89.69583﻿ (Clumbs Island) |
| Coleman Islands | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°28′13″N 88°38′59″W﻿ / ﻿43.47028°N 88.64972°W﻿ / 43.47028; -88.64972﻿ (Coleman Islands) |
| Coles Island | Dodge | Rock River | 0.01 | 0.026 | 43°19′22″N 88°35′17″W﻿ / ﻿43.32278°N 88.58806°W﻿ / 43.32278; -88.58806﻿ (Coles Island) |
| Colin Island | Vilas | Upper Bucktabon Lake | 0.01 | 0.026 | 46°00′59″N 89°20′50″W﻿ / ﻿46.01639°N 89.34722°W﻿ / 46.01639; -89.34722﻿ (Colin Island) |
| Cormorant Island | La Crosse | Mississippi River | 0.01 | 0.026 | 43°54′12″N 91°17′54″W﻿ / ﻿43.90333°N 91.29833°W﻿ / 43.90333; -91.29833﻿ (Cormorant Island) |
| Cotton Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°29′05″N 88°37′46″W﻿ / ﻿43.48472°N 88.62944°W﻿ / 43.48472; -88.62944﻿ (Cotton Island) |
| Coumbe Island | Grant | Wisconsin River | 0.54 | 1.4 | 43°11′52″N 90°34′51″W﻿ / ﻿43.19778°N 90.58083°W﻿ / 43.19778; -90.58083﻿ (Coumbe Island) |
| Crane Island | Dodge | Sinnissippi Lake | 0.01 | 0.026 | 43°22′26″N 88°36′42″W﻿ / ﻿43.37389°N 88.61167°W﻿ / 43.37389; -88.61167﻿ (Crane Island) |
| Crane Island | Vernon | Mississippi River | ? | ? | 43°37′42″N 91°13′31″W﻿ / ﻿43.62833°N 91.22528°W﻿ / 43.62833; -91.22528﻿ (Crane Island) |
| Crats Island | Buffalo | Mississippi River | 0.22 | 0.57 | 44°22′59″N 92°00′56″W﻿ / ﻿44.38306°N 92.01556°W﻿ / 44.38306; -92.01556﻿ (Crats Island) |
| Crescent Island | Oneida | Pelican Lake | <0.01 | <0.026 | 45°30′45″N 89°12′32″W﻿ / ﻿45.51250°N 89.20889°W﻿ / 45.51250; -89.20889﻿ (Crescent Island) |
| Crownhart Island | Douglas | Upper Saint Croix Lake | 0.01 | 0.026 | 46°20′25″N 91°48′42″W﻿ / ﻿46.34028°N 91.81167°W﻿ / 46.34028; -91.81167﻿ (Crownhart Island) |
| Cuba Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′18″N 88°51′19″W﻿ / ﻿43.45500°N 88.85528°W﻿ / 43.45500; -88.85528﻿ (Cuba Island) |
| Darrow Island | Sawyer | Chippewa Flowage | 0.27 | 0.70 | 45°58′12″N 91°11′48″W﻿ / ﻿45.97000°N 91.19667°W﻿ / 45.97000; -91.19667﻿ (Darrow Island) |
| Dead Island | Dodge | Fox Lake | <0.01 | <0.026 | 43°35′26″N 88°55′20″W﻿ / ﻿43.59056°N 88.92222°W﻿ / 43.59056; -88.92222﻿ (Dead Island) |
| Dead Island | Oneida | Tomahawk Lake | <0.01 | <0.026 | 45°48′52″N 89°38′28″W﻿ / ﻿45.81444°N 89.64111°W﻿ / 45.81444; -89.64111﻿ (Dead Island) |
| Dead Lake Island | Pepin | Chippewa River | 0.60 | 1.6 | 44°34′55″N 92°02′14″W﻿ / ﻿44.58194°N 92.03722°W﻿ / 44.58194; -92.03722﻿ (Dead Lake Island) |
| Deakin Island | Walworth | Middle Lake | 0.01 | 0.026 | 42°46′29″N 88°33′52″W﻿ / ﻿42.77472°N 88.56444°W﻿ / 42.77472; -88.56444﻿ (Deakin Island) |
| Deep Hole Island | Buffalo | Mississippi River | 0.02 | 0.052 | 44°12′12″N 91°50′18″W﻿ / ﻿44.20333°N 91.83833°W﻿ / 44.20333; -91.83833﻿ (Deep Hole Island) |
| Deer Island | Jackson | Unnamed marsh | 0.27 | 0.70 | 44°16′47″N 90°22′21″W﻿ / ﻿44.27972°N 90.37250°W﻿ / 44.27972; -90.37250﻿ (Deer Island) |
| Deer Island | Oconto | Wheeler Lake | <0.01 | <0.026 | 45°19′17″N 88°28′46″W﻿ / ﻿45.32139°N 88.47944°W﻿ / 45.32139; -88.47944﻿ (Deer Island) |
| Deer Island | Pepin | Mississippi River | ? | ? | 44°27′13″N 92°12′07″W﻿ / ﻿44.45361°N 92.20194°W﻿ / 44.45361; -92.20194﻿ (Deer Island) |
| Deer Island | Sauk | Wisconsin River | ? | ? | 43°10′34″N 90°02′09″W﻿ / ﻿43.17611°N 90.03583°W﻿ / 43.17611; -90.03583﻿ (Deer Island) |
| Deer Toe Island | Buffalo | Mississippi River | 0.01 | 0.026 | 44°12′31″N 91°51′45″W﻿ / ﻿44.20861°N 91.86250°W﻿ / 44.20861; -91.86250﻿ (Deer Toe Island) |
| Denby Island | Oneida | Medicine Lake | 0.04 | 0.10 | 45°48′37″N 89°07′21″W﻿ / ﻿45.81028°N 89.12250°W﻿ / 45.81028; -89.12250﻿ (Denby Island) |
| Devil Island | Dodge | Fox Lake | <0.01 | <0.026 | 43°35′07″N 88°56′47″W﻿ / ﻿43.58528°N 88.94639°W﻿ / 43.58528; -88.94639﻿ (Devil Island) |
| Dewings Island | Walworth | Mill Lake | 0.01 | 0.026 | 42°45′35″N 88°33′37″W﻿ / ﻿42.75972°N 88.56028°W﻿ / 42.75972; -88.56028﻿ (Dewings Island) |
| Diamond Island | Dodge | Rock River | ? | ? | 43°25′34″N 88°38′06″W﻿ / ﻿43.42611°N 88.63500°W﻿ / 43.42611; -88.63500﻿ (Diamond Island) |
| Diamond Island | Pierce | Mississippi River | 0.08 | 0.21 | 44°36′09″N 92°35′06″W﻿ / ﻿44.60250°N 92.58500°W﻿ / 44.60250; -92.58500﻿ (Diamond Island) |
| Dodes Island | Sawyer | Flambeau River | <0.01 | <0.026 | 45°39′10″N 90°47′40″W﻿ / ﻿45.65278°N 90.79444°W﻿ / 45.65278; -90.79444﻿ (Dodes Island) |
| Doty Island | Winnebago | Fox River | 1.11 | 2.9 | 44°11′37″N 88°26′51″W﻿ / ﻿44.19361°N 88.44750°W﻿ / 44.19361; -88.44750﻿ (Doty Island) |
| Drescher Island | Jackson | Unnamed marsh | ? | ? | 44°15′29″N 90°24′37″W﻿ / ﻿44.25806°N 90.41028°W﻿ / 44.25806; -90.41028﻿ (Drescher Island) |
| Duck Island | Vilas | Lac Vieux Desert | 0.03 | 0.078 | 46°08′07″N 89°05′58″W﻿ / ﻿46.13528°N 89.09944°W﻿ / 46.13528; -89.09944﻿ (Duck Island) |
| Dutchman Islands | Juneau | Wisconsin River | 0.05 | 0.13 | 43°42′29″N 89°49′43″W﻿ / ﻿43.70806°N 89.82861°W﻿ / 43.70806; -89.82861﻿ (Dutchman Islands) |
| Eagle Island | Florence | Middle Lake | <0.01 | <0.026 | 45°53′38″N 88°08′16″W﻿ / ﻿45.89389°N 88.13778°W﻿ / 45.89389; -88.13778﻿ (Eagle Island) |
| Eagle Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°40′32″N 91°13′45″W﻿ / ﻿43.67556°N 91.22917°W﻿ / 43.67556; -91.22917﻿ (Eagle Island) |
| Eagles Nest Island | Sawyer | Chippewa Flowage | 0.03 | 0.078 | 45°57′32″N 91°10′43″W﻿ / ﻿45.95889°N 91.17861°W﻿ / 45.95889; -91.17861﻿ (Eagles Nest Island) |
| East Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°39′03″N 91°14′21″W﻿ / ﻿43.65083°N 91.23917°W﻿ / 43.65083; -91.23917﻿ (East Island) |
| Edwards Island | Wood | Wisconsin River | 0.04 | 0.10 | 44°22′19″N 89°50′56″W﻿ / ﻿44.37194°N 89.84889°W﻿ / 44.37194; -89.84889﻿ (Edwards Island) |
| Elmwood Island | Dodge | Fox Lake | 0.01 | 0.026 | 43°35′10″N 88°55′15″W﻿ / ﻿43.58611°N 88.92083°W﻿ / 43.58611; -88.92083﻿ (Elmwood Island) |
| Everbreeze Island | Oneida | Manson Lake | <0.01 | <0.026 | 45°33′49″N 89°37′59″W﻿ / ﻿45.56361°N 89.63306°W﻿ / 45.56361; -89.63306﻿ (Everbreeze Island) |
| Evergreen Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′30″N 88°51′59″W﻿ / ﻿43.45833°N 88.86639°W﻿ / 43.45833; -88.86639﻿ (Evergreen Island) |
| Fairy Island | Walworth | Booth Lake | <0.01 | <0.026 | 42°48′06″N 88°25′42″W﻿ / ﻿42.80167°N 88.42833°W﻿ / 42.80167; -88.42833﻿ (Fairy Island) |
| Faust Island | Barron | Red Cedar Lake | <0.01 | <0.026 | 45°37′09″N 91°35′19″W﻿ / ﻿45.61917°N 91.58861°W﻿ / 45.61917; -91.58861﻿ (Faust Island) |
| Feather Island | Crawford | Wisconsin River | 0.19 | 0.49 | 43°09′44″N 90°42′01″W﻿ / ﻿43.16222°N 90.70028°W﻿ / 43.16222; -90.70028﻿ (Feather Island) |
| Fiefield Island | Oneida | Kawaguesaga Lake | 0.01 | 0.026 | 45°52′05″N 89°43′38″W﻿ / ﻿45.86806°N 89.72722°W﻿ / 45.86806; -89.72722﻿ (Fiefield Island) |
| Fields Island | Portage | Wisconsin River | 0.48 | 1.2 | 44°28′08″N 89°33′51″W﻿ / ﻿44.46889°N 89.56417°W﻿ / 44.46889; -89.56417﻿ (Fields Island) |
| First Island | Polk | Balsam Lake | <0.01 | <0.026 | 45°27′28″N 92°27′03″W﻿ / ﻿45.45778°N 92.45083°W﻿ / 45.45778; -92.45083﻿ (First Island) |
| Fisher Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°30′58″N 88°53′09″W﻿ / ﻿43.51611°N 88.88583°W﻿ / 43.51611; -88.88583﻿ (Fisher Island) |
| Fishers Island | Oneida | Lake Minocqua | 0.01 | 0.026 | 45°52′21″N 89°41′16″W﻿ / ﻿45.87250°N 89.68778°W﻿ / 45.87250; -89.68778﻿ (Fishers Island) |
| Five Islands | Menominee | Wolf River | 0.01 | 0.026 | 44°59′43″N 88°36′19″W﻿ / ﻿44.99528°N 88.60528°W﻿ / 44.99528; -88.60528﻿ (Five Islands) |
| Flat Island | Sawyer | Chippewa Flowage | 0.37 | 0.96 | 45°54′57″N 91°13′27″W﻿ / ﻿45.91583°N 91.22417°W﻿ / 45.91583; -91.22417﻿ (Flat Island) |
| Folson Island | Sawyer | Moose Lake | <0.01 | <0.026 | 46°00′47″N 91°02′14″W﻿ / ﻿46.01306°N 91.03722°W﻿ / 46.01306; -91.03722﻿ (Folson Island) |
| Fourmile Island | Dodge | Horicon Marsh | 0.04 | 0.10 | 43°29′35″N 88°37′30″W﻿ / ﻿43.49306°N 88.62500°W﻿ / 43.49306; -88.62500﻿ (Fourmile Island) |
| Fox Island | Vilas | Rest Lake | 0.02 | 0.052 | 46°08′21″N 89°52′22″W﻿ / ﻿46.13917°N 89.87278°W﻿ / 46.13917; -89.87278﻿ (Fox Island) |
| French Island | Clark | Black River | <0.01 | <0.026 | 44°26′53″N 90°41′35″W﻿ / ﻿44.44806°N 90.69306°W﻿ / 44.44806; -90.69306﻿ (French Island) |
| French Island | La Crosse | Mississippi River | 0.48 | 1.2 | 43°52′13″N 91°15′46″W﻿ / ﻿43.87028°N 91.26278°W﻿ / 43.87028; -91.26278﻿ (French Island) |
| Frog Island | Vilas | High Lake | 0.02 | 0.052 | 46°09′33″N 89°32′28″W﻿ / ﻿46.15917°N 89.54111°W﻿ / 46.15917; -89.54111﻿ (Frog Island) |
| Gangster Island | Vilas | North Twin Lake | 0.016 | 0.041 | 46°2′27″N 89°9′7″W﻿ / ﻿46.04083°N 89.15194°W﻿ / 46.04083; -89.15194﻿ (Gangster Island) |
| Garbutt Island | Sawyer | Lake Chetac | ? | ? | 45°42′37″N 91°30′31″W﻿ / ﻿45.71028°N 91.50861°W﻿ / 45.71028; -91.50861﻿ (Garbutt Island) |
| Gardner Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°31′06″N 88°39′11″W﻿ / ﻿43.51833°N 88.65306°W﻿ / 43.51833; -88.65306﻿ (Gardner Island) |
| Garlic Island or Island Park | Winnebago | Lake Winnebago | 0.01 | 0.026 | 44°05′19″N 88°28′54″W﻿ / ﻿44.08861°N 88.48167°W﻿ / 44.08861; -88.48167﻿ (Garlic Island) |
| Garrison Island | Wood | Wisconsin River | 0.01 | 0.026 | 44°22′31″N 89°50′42″W﻿ / ﻿44.37528°N 89.84500°W﻿ / 44.37528; -89.84500﻿ (Garrison Island) |
| Goose Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°30′37″N 88°52′50″W﻿ / ﻿43.51028°N 88.88056°W﻿ / 43.51028; -88.88056﻿ (Goose Island) |
| Goose Island | Dodge | Horicon Marsh | 0.02 | 0.052 | 43°32′30″N 88°39′45″W﻿ / ﻿43.54167°N 88.66250°W﻿ / 43.54167; -88.66250﻿ (Goose Island) |
| Goose Island | La Crosse & Vernon | Mississippi River | 0.96 | 2.5 | 43°43′46″N 91°13′31″W﻿ / ﻿43.72944°N 91.22528°W﻿ / 43.72944; -91.22528﻿ (Goose Island) |
| Government Island | Waupaca | Chain O' Lakes | 0.02 | 0.052 | 44°20′30″N 89°08′44″W﻿ / ﻿44.34167°N 89.14556°W﻿ / 44.34167; -89.14556﻿ (Government Island) |
| Governors Island | Dane | Lake Mendota | 0.03 | 0.078 | 43°07′27″N 89°24′08″W﻿ / ﻿43.12417°N 89.40222°W﻿ / 43.12417; -89.40222﻿ (Governors Island) |
| Grape Island | Dane & Iowa | Wisconsin River | 0.09 | 0.23 | 43°12′05″N 89°50′24″W﻿ / ﻿43.20139°N 89.84000°W﻿ / 43.20139; -89.84000﻿ (Grape Island) |
| Grape Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′11″N 88°51′20″W﻿ / ﻿43.45306°N 88.85556°W﻿ / 43.45306; -88.85556﻿ (Grape Island) |
| Grassy Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°39′04″N 91°14′56″W﻿ / ﻿43.65111°N 91.24889°W﻿ / 43.65111; -91.24889﻿ (Grassy Island) |
| Gravel Island | Chippewa | Chippewa River | ? | ? | 44°55′10″N 91°26′09″W﻿ / ﻿44.91944°N 91.43583°W﻿ / 44.91944; -91.43583﻿ (Gravel Island) |
| Green Island | La Crosse | Mississippi River | 0.37 | 0.96 | 43°46′59″N 91°14′26″W﻿ / ﻿43.78306°N 91.24056°W﻿ / 43.78306; -91.24056﻿ (Green Island) |
| Green Island | Oconto | Leigh Flowage | 0.01 | 0.026 | 45°02′50″N 88°13′55″W﻿ / ﻿45.04722°N 88.23194°W﻿ / 45.04722; -88.23194﻿ (Green Island) |
| Greenwing Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°40′10″N 91°13′45″W﻿ / ﻿43.66944°N 91.22917°W﻿ / 43.66944; -91.22917﻿ (Greenwing Island) |
| Grutt Island | Sawyer | Lake Chetac | 0.02 | 0.052 | 45°42′00″N 91°30′01″W﻿ / ﻿45.70000°N 91.50028°W﻿ / 45.70000; -91.50028﻿ (Grutt Island) |
| Hacklin Island | Crawford | Wisconsin River | 0.08 | 0.21 | 43°02′08″N 90°58′09″W﻿ / ﻿43.03556°N 90.96917°W﻿ / 43.03556; -90.96917﻿ (Hacklin Island) |
| Hall Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°30′40″N 88°40′35″W﻿ / ﻿43.51111°N 88.67639°W﻿ / 43.51111; -88.67639﻿ (Hall Island) |
| Happy Island | Dunn | Chippewa River | 1.65 | 4.3 | 44°45′46″N 91°45′47″W﻿ / ﻿44.76278°N 91.76306°W﻿ / 44.76278; -91.76306﻿ (Happy Island) |
| Harris Island | Crawford | Wisconsin River | 0.11 | 0.28 | 43°04′23″N 90°53′04″W﻿ / ﻿43.07306°N 90.88444°W﻿ / 43.07306; -90.88444﻿ (Harris Island) |
| Hawk Island | Jackson | Black River | 0.37 | 0.96 | 44°15′13″N 90°52′15″W﻿ / ﻿44.25361°N 90.87083°W﻿ / 44.25361; -90.87083﻿ (Hawk Island) |
| Heelsplitter Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°37′56″N 91°15′30″W﻿ / ﻿43.63222°N 91.25833°W﻿ / 43.63222; -91.25833﻿ (Heelsplitter Island) |
| Heron Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′53″N 91°14′38″W﻿ / ﻿43.64806°N 91.24389°W﻿ / 43.64806; -91.24389﻿ (Heron Island) |
| High Bank Island | Iowa | Wisconsin River | 0.04 | 0.10 | 43°11′53″N 90°25′11″W﻿ / ﻿43.19806°N 90.41972°W﻿ / 43.19806; -90.41972﻿ (High Bank Island) |
| High Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°28′40″N 88°52′52″W﻿ / ﻿43.47778°N 88.88111°W﻿ / 43.47778; -88.88111﻿ (High Island) |
| Hog Island | Dane | Lake Waubesa | ? | ? | 43°01′17″N 89°19′33″W﻿ / ﻿43.02139°N 89.32583°W﻿ / 43.02139; -89.32583﻿ (Hog Island) |
| Hog Island | Juneau | Unnamed marsh | ? | ? | 44°14′27″N 90°17′14″W﻿ / ﻿44.24083°N 90.28722°W﻿ / 44.24083; -90.28722﻿ (Hog Island) |
| Honey Island | Marathon | Honey Island Flowage | 0.08 | 0.21 | 44°42′03″N 89°53′26″W﻿ / ﻿44.70083°N 89.89056°W﻿ / 44.70083; -89.89056﻿ (Honey Island) |
| Honeymoon Island | Barron | Red Cedar Lake | <0.01 | <0.026 | 45°35′14″N 91°35′13″W﻿ / ﻿45.58722°N 91.58694°W﻿ / 45.58722; -91.58694﻿ (Honeymoon Island) |
| Horseshoe Island | Iron | Long Lake | <0.01 | <0.026 | 46°15′05″N 90°01′14″W﻿ / ﻿46.25139°N 90.02056°W﻿ / 46.25139; -90.02056﻿ (Horseshoe Island) |
| Hunter Island | Crawford | Mississippi River | 0.12 | 0.31 | 43°01′33″N 91°09′21″W﻿ / ﻿43.02583°N 91.15583°W﻿ / 43.02583; -91.15583﻿ (Hunter Island) |
| Hunter Island | Wood | Wisconsin River | ? | ? | 44°24′44″N 89°49′03″W﻿ / ﻿44.41222°N 89.81750°W﻿ / 44.41222; -89.81750﻿ (Hunter Island) |
| Hupf Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°29′18″N 88°52′29″W﻿ / ﻿43.48833°N 88.87472°W﻿ / 43.48833; -88.87472﻿ (Hupf Island) |
| Hurricane Island | Grant | Mississippi River | 0.09 | 0.23 | 42°39′54″N 90°50′40″W﻿ / ﻿42.66500°N 90.84444°W﻿ / 42.66500; -90.84444﻿ (Hurricane Island) |
| Ile Le Grand | Marinette | Menominee River | 0.36 | 0.93 | 45°40′11″N 87°48′27″W﻿ / ﻿45.66972°N 87.80750°W﻿ / 45.66972; -87.80750﻿ (Ile Le Grand) |
| Indernuhle Island | Dodge | Horicon Marsh | 0.02 | 0.052 | 43°28′13″N 88°36′34″W﻿ / ﻿43.47028°N 88.60944°W﻿ / 43.47028; -88.60944﻿ (Indernuhle Island) |
| Island Number Fifty-four | Buffalo | Mississippi River | 0.03 | 0.078 | 44°09′07″N 91°46′55″W﻿ / ﻿44.15194°N 91.78194°W﻿ / 44.15194; -91.78194﻿ (Island Number Fifty-four) |
| Island Number Fifty-three | Buffalo | Mississippi River | 0.04 | 0.10 | 44°09′20″N 91°47′32″W﻿ / ﻿44.15556°N 91.79222°W﻿ / 44.15556; -91.79222﻿ (Island Number Fifty-three) |
| Island Number Fifty-two | Buffalo | Mississippi River | 0.01 | 0.026 | 44°09′23″N 91°47′45″W﻿ / ﻿44.15639°N 91.79583°W﻿ / 44.15639; -91.79583﻿ (Island Number Fifty-two) |
| Island Number Ninety-one | La Crosse | Mississippi River | 0.05 | 0.13 | 43°55′38″N 91°21′30″W﻿ / ﻿43.92722°N 91.35833°W﻿ / 43.92722; -91.35833﻿ (Island Number Ninety-one) |
| Island Number One | Vilas | Little Saint Germain Lake | <0.01 | <0.026 | 45°55′35″N 89°25′54″W﻿ / ﻿45.92639°N 89.43167°W﻿ / 45.92639; -89.43167﻿ (Island Number One) |
| Island Number One Hundred Eighty-one | Grant | Mississippi River | 0.05 | 0.13 | 42°54′45″N 91°08′34″W﻿ / ﻿42.91250°N 91.14278°W﻿ / 42.91250; -91.14278﻿ (Island Number One Hundred Eighty-one) |
| Island Number One Hundred Fifty-nine | Crawford | Mississippi River | ? | ? | 43°13′29″N 91°04′59″W﻿ / ﻿43.22472°N 91.08306°W﻿ / 43.22472; -91.08306﻿ (Island Number One Hundred Fifty-nine) |
| Island Number One Hundred Fifty-six | Crawford | Mississippi River | <0.01 | <0.026 | 43°15′49″N 91°03′25″W﻿ / ﻿43.26361°N 91.05694°W﻿ / 43.26361; -91.05694﻿ (Island Number One Hundred Fifty-Six) |
| Island Number One Hundred Forty-six | Vernon | Mississippi River | 0.32 | 0.83 | 43°21′32″N 91°12′16″W﻿ / ﻿43.35889°N 91.20444°W﻿ / 43.35889; -91.20444﻿ (Island Number One Hundred Forty-six) |
| Island Number One Hundred Forty-three | Crawford & Vernon | Mississippi River | 1.11 | 2.9 | 43°22′26″N 91°11′20″W﻿ / ﻿43.37389°N 91.18889°W﻿ / 43.37389; -91.18889﻿ (Island Number One Hundred Forty-three) |
| Island Number One Hundred Ninety-two | Grant | Mississippi River | 0.08 | 0.21 | 42°43′36″N 91°01′33″W﻿ / ﻿42.72667°N 91.02583°W﻿ / 42.72667; -91.02583﻿ (Island Number One Hundred Ninety-two) |
| Island Number One Hundred Seventy | Crawford | Mississippi River | <0.01 | <0.026 | 43°04′03″N 91°10′44″W﻿ / ﻿43.06750°N 91.17889°W﻿ / 43.06750; -91.17889﻿ (Island Number One Hundred Seventy) |
| Island Number One Hundred Seventy-seven | Grant | Mississippi River | 0.10 | 0.26 | 42°56′10″N 91°08′42″W﻿ / ﻿42.93611°N 91.14500°W﻿ / 42.93611; -91.14500﻿ (Island Number One Hundred Seventy-seven) |
| Island Number One Hundred Seventy-two | Crawford | Mississippi River | 0.97 | 2.5 | 43°02′32″N 91°10′04″W﻿ / ﻿43.04222°N 91.16778°W﻿ / 43.04222; -91.16778﻿ (Island Number One Hundred Seventy-two) |
| Island Number One Hundred Sixty-seven | Crawford | Mississippi River | 0.02 | 0.052 | 43°05′27″N 91°10′28″W﻿ / ﻿43.09083°N 91.17444°W﻿ / 43.09083; -91.17444﻿ (Island Number One Hundred Sixty-seven) |
| Island Number One Hundred Sixty-six | Crawford | Mississippi River | 1.66 | 4.3 | 43°07′00″N 91°09′39″W﻿ / ﻿43.11667°N 91.16083°W﻿ / 43.11667; -91.16083﻿ (Island Number One Hundred Sixty-six) |
| Island Number Seventy-one | Buffalo | Mississippi River | 0.07 | 0.18 | 44°03′58″N 91°38′46″W﻿ / ﻿44.06611°N 91.64611°W﻿ / 44.06611; -91.64611﻿ (Island Number Seventy-one) |
| Island Number Sixty-three | Buffalo | Mississippi River | 0.23 | 0.60 | 44°06′43″N 91°42′08″W﻿ / ﻿44.11194°N 91.70222°W﻿ / 44.11194; -91.70222﻿ (Island Number Sixty-three) |
| Island Number Two Hundred Eleven | Grant | Mississippi River | ? | ? | 42°38′42″N 90°43′00″W﻿ / ﻿42.64500°N 90.71667°W﻿ / 42.64500; -90.71667﻿ (Island Number Two Hundred Eleven) |
| Island Number Two Hundred Five | Grant | Mississippi River | <0.01 | <0.026 | 42°39′33″N 90°48′16″W﻿ / ﻿42.65917°N 90.80444°W﻿ / 42.65917; -90.80444﻿ (Island Number Two Hundred Five) |
| Island Number Two Hundred Nine | Grant | Mississippi River | ? | ? | 42°39′02″N 90°45′24″W﻿ / ﻿42.65056°N 90.75667°W﻿ / 42.65056; -90.75667﻿ (Island Number Two Hundred Nine) |
| Island Number Two Hundred One | Grant | Mississippi River | 0.05 | 0.13 | 42°40′22″N 90°52′47″W﻿ / ﻿42.67278°N 90.87972°W﻿ / 42.67278; -90.87972﻿ (Island Number Two Hundred One) |
| Island Number Two Hundred Seven | Grant | Mississippi River | 0.03 | 0.078 | 42°39′24″N 90°47′31″W﻿ / ﻿42.65667°N 90.79194°W﻿ / 42.65667; -90.79194﻿ (Island Number Two Hundred Seven) |
| Island Number Two Hundred Twelve | Grant | Mississippi River | ? | ? | 42°37′59″N 90°41′50″W﻿ / ﻿42.63306°N 90.69722°W﻿ / 42.63306; -90.69722﻿ (Island Number Two Hundred Twelve) |
| Island One Hundred Twenty | Vernon | Mississippi River | 0.05 | 0.13 | 43°40′18″N 91°15′52″W﻿ / ﻿43.67167°N 91.26444°W﻿ / 43.67167; -91.26444﻿ (Island One Hundred Twenty) |
| Islandale | Waukesha | Lac La Belle | 0.01 | 0.026 | 43°07′22″N 88°30′51″W﻿ / ﻿43.12278°N 88.51417°W﻿ / 43.12278; -88.51417﻿ (Islandale) |
| Isle La Plume | La Crosse | Mississippi River | 0.25 | 0.65 | 43°47′35″N 91°15′27″W﻿ / ﻿43.79306°N 91.25750°W﻿ / 43.79306; -91.25750﻿ (Isle La Plume) |
| Jack Oak Island | Grant | Mississippi River | 0.24 | 0.62 | 42°41′55″N 90°57′48″W﻿ / ﻿42.69861°N 90.96333°W﻿ / 42.69861; -90.96333﻿ (Jack Oak Island) |
| James Island | Winnebago | Fox River | <0.01 | <0.026 | 44°12′00″N 88°27′50″W﻿ / ﻿44.20000°N 88.46389°W﻿ / 44.20000; -88.46389﻿ (James Island) |
| Jewelwing Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°37′33″N 91°15′49″W﻿ / ﻿43.62583°N 91.26361°W﻿ / 43.62583; -91.26361﻿ (Jewelwing Island) |
| Johnson Island | Trempealeau | Mississippi River | 0.15 | 0.39 | 44°00′49″N 91°29′07″W﻿ / ﻿44.01361°N 91.48528°W﻿ / 44.01361; -91.48528﻿ (Johnson Island) |
| Jossart Island | Oneida | Lake Minocqua | <0.01 | <0.026 | 45°51′57″N 89°41′53″W﻿ / ﻿45.86583°N 89.69806°W﻿ / 45.86583; -89.69806﻿ (Jossart Island) |
| Keith Island | Vilas | Big Lake | 0.02 | 0.052 | 46°09′28″N 89°46′16″W﻿ / ﻿46.15778°N 89.77111°W﻿ / 46.15778; -89.77111﻿ (Keith Island) |
| Keller Island | Buffalo | Mississippi River | 0.02 | 0.052 | 44°13′11″N 91°51′59″W﻿ / ﻿44.21972°N 91.86639°W﻿ / 44.21972; -91.86639﻿ (Keller Island) |
| Ketchum Island | Grant & Wood | Unnamed marsh | ? | ? | 44°15′52″N 90°19′44″W﻿ / ﻿44.26444°N 90.32889°W﻿ / 44.26444; -90.32889﻿ (Ketchum Island) |
| Kirsch Island (also known as Fish Camp Island) | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°30′24″N 88°52′14″W﻿ / ﻿43.50667°N 88.87056°W﻿ / 43.50667; -88.87056﻿ (Kirsch Island) |
| Kline Island | Oneida | Lake Minocqua | <0.01 | <0.026 | 45°52′07″N 89°41′53″W﻿ / ﻿45.86861°N 89.69806°W﻿ / 45.86861; -89.69806﻿ (Kline Island) |
| Koch Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°29′00″N 88°36′31″W﻿ / ﻿43.48333°N 88.60861°W﻿ / 43.48333; -88.60861﻿ (Koch Island) |
| Koch Island | Dodge | Sinnissippi Lake | 0.02 | 0.052 | 43°21′15″N 88°36′26″W﻿ / ﻿43.35417°N 88.60722°W﻿ / 43.35417; -88.60722﻿ (Koch Island) |
| Kopf Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′48″N 88°52′04″W﻿ / ﻿43.46333°N 88.86778°W﻿ / 43.46333; -88.86778﻿ (Kopf Island) |
| Kunz Island | Washburn | Long Lake | <0.01 | <0.026 | 45°42′15″N 91°43′07″W﻿ / ﻿45.70417°N 91.71861°W﻿ / 45.70417; -91.71861﻿ (Kunz Island) |
| Lib Cross Island | Columbia | Wisconsin River | 0.37 | 0.96 | 43°28′20″N 89°26′40″W﻿ / ﻿43.47222°N 89.44444°W﻿ / 43.47222; -89.44444﻿ (Lib Cross Island) |
| Little Banana Island | Sawyer | Chippewa Flowage | 0.06 | 0.16 | 45°55′48″N 91°14′01″W﻿ / ﻿45.93000°N 91.23361°W﻿ / 45.93000; -91.23361﻿ (Little Banana Island) |
| Little Boom Island | Waupaca | Wolf River | 0.01 | 0.026 | 44°17′32″N 88°52′00″W﻿ / ﻿44.29222°N 88.86667°W﻿ / 44.29222; -88.86667﻿ (Little Boom Island) |
| Little Chute Islands | Outagamie | Fox River | 0.06 | 0.16 | 44°16′29″N 88°17′49″W﻿ / ﻿44.27472°N 88.29694°W﻿ / 44.27472; -88.29694﻿ (Little Chute Islands) |
| Little Goose Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°26′49″N 88°51′39″W﻿ / ﻿43.44694°N 88.86083°W﻿ / 43.44694; -88.86083﻿ (Little Goose Island) |
| Little Hoot Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°37′54″N 91°14′47″W﻿ / ﻿43.63167°N 91.24639°W﻿ / 43.63167; -91.24639﻿ (Little Hoot Island) |
| Little Island | Grant | Wisconsin River | 0.06 | 0.16 | 43°10′31″N 90°38′33″W﻿ / ﻿43.17528°N 90.64250°W﻿ / 43.17528; -90.64250﻿ (Little Island) |
| Little Island | Oneida | Squash Lake | <0.01 | <0.026 | 45°35′43″N 89°33′32″W﻿ / ﻿45.59528°N 89.55889°W﻿ / 45.59528; -89.55889﻿ (Little Island) |
| Little Ripley Island | Oneida | Kawaguesaga Lake | <0.01 | <0.026 | 45°52′21″N 89°44′16″W﻿ / ﻿45.87250°N 89.73778°W﻿ / 45.87250; -89.73778﻿ (Little Ripley Island) |
| Little Skunk Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°29′18″N 88°51′08″W﻿ / ﻿43.48833°N 88.85222°W﻿ / 43.48833; -88.85222﻿ (Little Skunk Island) |
| Log Island | Vernon | Mississippi River | ? | ? | 43°38′06″N 91°13′29″W﻿ / ﻿43.63500°N 91.22472°W﻿ / 43.63500; -91.22472﻿ (Log Island) |
| Lone Island | Dodge | Fox Lake | <0.01 | <0.026 | 43°35′25″N 88°54′59″W﻿ / ﻿43.59028°N 88.91639°W﻿ / 43.59028; -88.91639﻿ (Lone Island) |
| Lone Island | Washington | Big Cedar Lake | <0.01 | <0.026 | 43°24′14″N 88°15′24″W﻿ / ﻿43.40389°N 88.25667°W﻿ / 43.40389; -88.25667﻿ (Lone Island) |
| Lone Willow Island | Winnebago | Lake Poygan | <0.01 | <0.026 | 44°08′03″N 88°46′12″W﻿ / ﻿44.13417°N 88.77000°W﻿ / 44.13417; -88.77000﻿ (Lone Willow Island) |
| Long Island | Barron | Hemlock Lake | <0.01 | <0.026 | 45°34′08″N 91°33′54″W﻿ / ﻿45.56889°N 91.56500°W﻿ / 45.56889; -91.56500﻿ (Long Island) |
| Long Island | Iowa | Wisconsin River | 0.05 | 0.13 | 43°10′59″N 90°01′15″W﻿ / ﻿43.18306°N 90.02083°W﻿ / 43.18306; -90.02083﻿ (Long Island) |
| Long Island | Marinette | Menominee River | 0.03 | 0.078 | 45°17′32″N 87°41′25″W﻿ / ﻿45.29222°N 87.69028°W﻿ / 45.29222; -87.69028﻿ (Long Island) |
| Long Island | Marinette | Menominee River | 0.01 | 0.026 | 45°40′21″N 87°47′34″W﻿ / ﻿45.67250°N 87.79278°W﻿ / 45.67250; -87.79278﻿ (Long Island) |
| Long Island | Sauk | Wisconsin River | 0.43 | 1.1 | 43°09′59″N 90°11′26″W﻿ / ﻿43.16639°N 90.19056°W﻿ / 43.16639; -90.19056﻿ (Long Island) |
| Long Point | Winnebago | Lake Winnebago | 0.02 | 0.052 | 43°54′01″N 88°27′02″W﻿ / ﻿43.90028°N 88.45056°W﻿ / 43.90028; -88.45056﻿ (Long Point) |
| Loon Island | Sawyer | Teal Lake | <0.01 | <0.026 | 46°04′40″N 91°07′00″W﻿ / ﻿46.07778°N 91.11667°W﻿ / 46.07778; -91.11667﻿ (Loon Island) |
| Maggies Island | Marinette & Menominee, Michigan | Menominee River | 0.02 | 0.052 | 45°19′54″N 87°39′22″W﻿ / ﻿45.33167°N 87.65611°W﻿ / 45.33167; -87.65611﻿ (Maggies Island) |
| Majestic Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′34″N 88°52′13″W﻿ / ﻿43.45944°N 88.87028°W﻿ / 43.45944; -88.87028﻿ (Majestic Island) |
| Manito Island | Vilas | Manitowish Lake | <0.01 | <0.026 | 46°06′43″N 89°50′03″W﻿ / ﻿46.11194°N 89.83417°W﻿ / 46.11194; -89.83417﻿ (Manito Island) |
| McClary Island | Richland | Wisconsin River | 0.05 | 0.13 | 43°12′18″N 90°28′35″W﻿ / ﻿43.20500°N 90.47639°W﻿ / 43.20500; -90.47639﻿ (McClary Island) |
| McDowell Island | Waukesha | Okauchee Lake | 0.01 | 0.026 | 43°08′02″N 88°26′22″W﻿ / ﻿43.13389°N 88.43944°W﻿ / 43.13389; -88.43944﻿ (McDowell Island) |
| McFetridge Island | Dodge | Fox Lake | <0.01 | <0.026 | 43°34′57″N 88°55′11″W﻿ / ﻿43.58250°N 88.91972°W﻿ / 43.58250; -88.91972﻿ (McFetridge Island) |
| McHenry Island | Barron | Red Cedar Lake | <0.01 | <0.026 | 45°36′40″N 91°34′44″W﻿ / ﻿45.61111°N 91.57889°W﻿ / 45.61111; -91.57889﻿ (McHenry Island) |
| McNott Island | Sawyer | Teal Lake | 0.03 | 0.078 | 46°05′09″N 91°06′41″W﻿ / ﻿46.08583°N 91.11139°W﻿ / 46.08583; -91.11139﻿ (McNott Island) |
| Metcalf Island | Sauk | Wisconsin River | 0.08 | 0.21 | 43°09′46″N 90°06′02″W﻿ / ﻿43.16278°N 90.10056°W﻿ / 43.16278; -90.10056﻿ (Metcalf Island) |
| Middle Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°29′13″N 88°52′39″W﻿ / ﻿43.48694°N 88.87750°W﻿ / 43.48694; -88.87750﻿ (Middle Island) |
| Millers Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′39″N 88°53′00″W﻿ / ﻿43.46083°N 88.88333°W﻿ / 43.46083; -88.88333﻿ (Millers Island) |
| Miscauno Island | Marinette | Menominee River | 0.15 | 0.39 | 45°33′58″N 87°50′10″W﻿ / ﻿45.56611°N 87.83611°W﻿ / 45.56611; -87.83611﻿ (Miscauno Island) |
| Misling Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°31′23″N 88°40′29″W﻿ / ﻿43.52306°N 88.67472°W﻿ / 43.52306; -88.67472﻿ (Misling Island) |
| Moon Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°32′13″N 88°55′19″W﻿ / ﻿43.53694°N 88.92194°W﻿ / 43.53694; -88.92194﻿ (Moon Island) |
| Mosquito Island | Dane | Wisconsin River | <0.01 | <0.026 | 43°16′16″N 89°43′02″W﻿ / ﻿43.27111°N 89.71722°W﻿ / 43.27111; -89.71722﻿ (Mosquito Island) |
| Mudcat Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′34″N 91°14′19″W﻿ / ﻿43.64278°N 91.23861°W﻿ / 43.64278; -91.23861﻿ (Mudcat Island) |
| Muench Island | Buffalo | Mississippi River | 0.16 | 0.41 | 44°14′45″N 91°53′10″W﻿ / ﻿44.24583°N 91.88611°W﻿ / 44.24583; -91.88611﻿ (Muench Island) |
| Mulligan Island | Grant | Mississippi River | 0.02 | 0.052 | 42°39′25″N 90°46′09″W﻿ / ﻿42.65694°N 90.76917°W﻿ / 42.65694; -90.76917﻿ (Mulligan Island) |
| Muscoda Island | Iowa | Wisconsin River | 0.04 | 0.10 | 43°11′56″N 90°25′25″W﻿ / ﻿43.19889°N 90.42361°W﻿ / 43.19889; -90.42361﻿ (Muscoda Island) |
| Musquash Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′23″N 91°15′08″W﻿ / ﻿43.63972°N 91.25222°W﻿ / 43.63972; -91.25222﻿ (Musquash Island) |
| Mussel Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′45″N 91°14′44″W﻿ / ﻿43.64583°N 91.24556°W﻿ / 43.64583; -91.24556﻿ (Mussel Island) |
| Negro Island | Lincoln | Wisconsin River | 0.02 | 0.052 | 45°32′16″N 89°33′47″W﻿ / ﻿45.53778°N 89.56306°W﻿ / 45.53778; -89.56306﻿ (Negro Island) |
| Neilson Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′28″N 88°52′29″W﻿ / ﻿43.45778°N 88.87472°W﻿ / 43.45778; -88.87472﻿ (Neilson Island) |
| Nekuk Island | Douglas | Saint Louis River | 0.03 | 0.078 | 46°39′25″N 92°16′34″W﻿ / ﻿46.65694°N 92.27611°W﻿ / 46.65694; -92.27611﻿ (Nekuk Island) |
| New Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°30′55″N 88°52′57″W﻿ / ﻿43.51528°N 88.88250°W﻿ / 43.51528; -88.88250﻿ (New Island) |
| Newton Island | Crawford | Wisconsin River | 0.16 | 0.41 | 43°04′27″N 90°52′01″W﻿ / ﻿43.07417°N 90.86694°W﻿ / 43.07417; -90.86694﻿ (Newton Island) |
| Ninemile Island | Pepin | Chippewa River | 2.20 | 5.7 | 44°40′42″N 91°55′35″W﻿ / ﻿44.67833°N 91.92639°W﻿ / 44.67833; -91.92639﻿ (Ninemile Island) |
| Nose Peak Island | Marinette | Menominee River | 0.02 | 0.052 | 45°39′39″N 87°49′33″W﻿ / ﻿45.66083°N 87.82583°W﻿ / 45.66083; -87.82583﻿ (Nose Peak Island) |
| Old Scribbler Island | Vernon | Mississippi River | ? | ? | 43°38′00″N 91°13′36″W﻿ / ﻿43.63333°N 91.22667°W﻿ / 43.63333; -91.22667﻿ (Old Scribbler Island) |
| Olmstead Island | Oneida | Tomahawk Lake | 0.02 | 0.052 | 45°49′55″N 89°40′47″W﻿ / ﻿45.83194°N 89.67972°W﻿ / 45.83194; -89.67972﻿ (Olmstead Island) |
| Onaway Island | Waupaca | Chain O' Lakes | 0.01 | 0.026 | 44°20′44″N 89°09′04″W﻿ / ﻿44.34556°N 89.15111°W﻿ / 44.34556; -89.15111﻿ (Onaway Island) |
| Ondaig Island | Douglas | Saint Louis River | <0.01 | <0.026 | 46°39′10″N 92°16′27″W﻿ / ﻿46.65278°N 92.27417°W﻿ / 46.65278; -92.27417﻿ (Ondaig Island) |
| Onemile Island | Dodge | Horicon Marsh | 0.02 | 0.052 | 43°27′40″N 88°38′23″W﻿ / ﻿43.46111°N 88.63972°W﻿ / 43.46111; -88.63972﻿ (Onemile Island) |
| Otter Island | Iowa | Wisconsin River | 0.02 | 0.052 | 43°11′51″N 89°51′02″W﻿ / ﻿43.19750°N 89.85056°W﻿ / 43.19750; -89.85056﻿ (Otter Island) |
| Otter Island | Vernon | Mississippi River | ? | ? | 43°38′20″N 91°14′11″W﻿ / ﻿43.63889°N 91.23639°W﻿ / 43.63889; -91.23639﻿ (Otter Island) |
| Packwaukee Island | Marquette | Fox River | ? | ? | 43°42′19″N 89°26′01″W﻿ / ﻿43.70528°N 89.43361°W﻿ / 43.70528; -89.43361﻿ (Packwaukee Island) |
| Paines Island | Bayfield | Namekagon Lake | 0.07 | 0.18 | 46°12′46″N 91°07′07″W﻿ / ﻿46.21278°N 91.11861°W﻿ / 46.21278; -91.11861﻿ (Paines Island) |
| Paradise Island | Iron | Pine Lake | <0.01 | <0.026 | 46°15′51″N 90°08′31″W﻿ / ﻿46.26417°N 90.14194°W﻿ / 46.26417; -90.14194﻿ (Paradise Island) |
| Paradise Island | Polk | Balsam Lake | 0.01 | 0.026 | 45°27′27″N 92°25′49″W﻿ / ﻿45.45750°N 92.43028°W﻿ / 45.45750; -92.43028﻿ (Paradise Island) |
| Paradise Island | Sawyer | Teal Lake | 0.02 | 0.052 | 46°05′22″N 91°05′39″W﻿ / ﻿46.08944°N 91.09417°W﻿ / 46.08944; -91.09417﻿ (Paradise Island) |
| Pasque Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°39′56″N 91°13′38″W﻿ / ﻿43.66556°N 91.22722°W﻿ / 43.66556; -91.22722﻿ (Pasque Island) |
| Patterson Island | Grant | Wisconsin River | 0.07 | 0.18 | 43°10′12″N 90°39′55″W﻿ / ﻿43.17000°N 90.66528°W﻿ / 43.17000; -90.66528﻿ (Patterson Island) |
| Pelican Island | Buffalo | Mississippi River | 0.01 | 0.026 | 44°12′46″N 91°51′59″W﻿ / ﻿44.21278°N 91.86639°W﻿ / 44.21278; -91.86639﻿ (Pelican Island) |
| Pelican Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′44″N 91°14′39″W﻿ / ﻿43.64556°N 91.24417°W﻿ / 43.64556; -91.24417﻿ (Pelican Island) |
| Pemebonwon Islands | Marinette | Menominee River | <0.01 | <0.026 | 45°39′15″N 87°49′35″W﻿ / ﻿45.65417°N 87.82639°W﻿ / 45.65417; -87.82639﻿ (Pemebonwon Islands) |
| Phils Island | Dodge | Horicon Marsh | 0.02 | 0.052 | 43°32′03″N 88°36′01″W﻿ / ﻿43.53417°N 88.60028°W﻿ / 43.53417; -88.60028﻿ (Phils Island) |
| Picnic Island | Oneida | Tomahawk Lake | <0.01 | <0.026 | 45°48′57″N 89°38′43″W﻿ / ﻿45.81583°N 89.64528°W﻿ / 45.81583; -89.64528﻿ (Picnic Island) |
| Pigeon Island | La Crosse | Mississippi River | 0.14 | 0.36 | 43°58′04″N 91°24′11″W﻿ / ﻿43.96778°N 91.40306°W﻿ / 43.96778; -91.40306﻿ (Pigeon Island) |
| Pine Island | Columbia | Wisconsin River | 0.40 | 1.0 | 43°32′59″N 89°34′43″W﻿ / ﻿43.54972°N 89.57861°W﻿ / 43.54972; -89.57861﻿ (Pine Island) |
| Pine Island | Marathon | Mosinee Flowage | 0.04 | 0.10 | 44°48′03″N 89°42′05″W﻿ / ﻿44.80083°N 89.70139°W﻿ / 44.80083; -89.70139﻿ (Pine Island) |
| Pine Island | Polk | Balsam Lake | <0.01 | <0.026 | 45°27′35″N 92°26′54″W﻿ / ﻿45.45972°N 92.44833°W﻿ / 45.45972; -92.44833﻿ (Pine Island) |
| Pine Island | Rusk | Flambeau River | 0.06 | 0.16 | 45°21′12″N 91°12′39″W﻿ / ﻿45.35333°N 91.21083°W﻿ / 45.35333; -91.21083﻿ (Pine Island) |
| Pine Island | Sawyer | Teal Lake | 0.01 | 0.026 | 46°04′46″N 91°07′11″W﻿ / ﻿46.07944°N 91.11972°W﻿ / 46.07944; -91.11972﻿ (Pine Island) |
| Pleasant Island | Walworth | Middle Lake | 0.01 | 0.026 | 42°46′12″N 88°33′53″W﻿ / ﻿42.77000°N 88.56472°W﻿ / 42.77000; -88.56472﻿ (Pleasant Island) |
| Pleasure Island | Wood | Wisconsin River | 0.03 | 0.078 | 44°26′46″N 89°43′48″W﻿ / ﻿44.44611°N 89.73000°W﻿ / 44.44611; -89.73000﻿ (Pleasure Island) |
| Pool Nine Island | Crawford | Mississippi River | 1.03 | 2.7 | 43°18′11″N 91°05′24″W﻿ / ﻿43.30306°N 91.09000°W﻿ / 43.30306; -91.09000﻿ (Pool Nine Island) |
| Poplar Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′48″N 88°53′01″W﻿ / ﻿43.46333°N 88.88361°W﻿ / 43.46333; -88.88361﻿ (Poplar Island) |
| Popple Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°28′29″N 88°39′12″W﻿ / ﻿43.47472°N 88.65333°W﻿ / 43.47472; -88.65333﻿ (Popple Island) |
| Popple Island | Sawyer | Chippewa Flowage | <0.01 | <0.026 | 45°57′39″N 91°09′58″W﻿ / ﻿45.96083°N 91.16611°W﻿ / 45.96083; -91.16611﻿ (Popple Island) |
| Pork Barrel Island | Sawyer | Chippewa Flowage | 0.01 | 0.026 | 45°56′54″N 91°09′38″W﻿ / ﻿45.94833°N 91.16056°W﻿ / 45.94833; -91.16056﻿ (Pork Barrel Island) |
| Pumpkinseed Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°37′53″N 91°14′31″W﻿ / ﻿43.63139°N 91.24194°W﻿ / 43.63139; -91.24194﻿ (Pumpkinseed Island) |
| Radloff Island | Dodge | Sinnissippi Lake | 0.08 | 0.21 | 43°21′57″N 88°36′39″W﻿ / ﻿43.36583°N 88.61083°W﻿ / 43.36583; -88.61083﻿ (Radloff Island) |
| Radloff Islands | Dodge | Horicon Marsh | 0.02 | 0.052 | 43°30′53″N 88°40′53″W﻿ / ﻿43.51472°N 88.68139°W﻿ / 43.51472; -88.68139﻿ (Radloff Islands) |
| Rank Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°36′06″N 88°40′01″W﻿ / ﻿43.60167°N 88.66694°W﻿ / 43.60167; -88.66694﻿ (Rank Island) |
| Raspberry Island | Sawyer | Teal Lake | 0.02 | 0.052 | 46°04′52″N 91°06′27″W﻿ / ﻿46.08111°N 91.10750°W﻿ / 46.08111; -91.10750﻿ (Raspberry Island) |
| Red Oak Ridge | La Crosse | Mississippi River | 0.09 | 0.23 | 43°53′14″N 91°17′42″W﻿ / ﻿43.88722°N 91.29500°W﻿ / 43.88722; -91.29500﻿ (Red Oak Ridge) |
| Redwing Island | Vernon | Mississippi River | ? | ? | 43°37′51″N 91°13′49″W﻿ / ﻿43.63083°N 91.23028°W﻿ / 43.63083; -91.23028﻿ (Redwing Island) |
| Rice Island | Washburn | Long Lake | ? | ? | 45°43′30″N 91°42′26″W﻿ / ﻿45.72500°N 91.70722°W﻿ / 45.72500; -91.70722﻿ (Rice Island) |
| Robarge Island | Barron | Hemlock Lake | <0.01 | <0.026 | 45°34′03″N 91°34′29″W﻿ / ﻿45.56750°N 91.57472°W﻿ / 45.56750; -91.57472﻿ (Robarge Island) |
| Robbins Island | Florence | North Lake | 0.01 | 0.026 | 45°54′10″N 88°08′18″W﻿ / ﻿45.90278°N 88.13833°W﻿ / 45.90278; -88.13833﻿ (Robbins Island) |
| Rock Island | Lincoln | Wisconsin River | <0.01 | <0.026 | 45°12′10″N 89°45′17″W﻿ / ﻿45.20278°N 89.75472°W﻿ / 45.20278; -89.75472﻿ (Rock Island) |
| Rock Island | Polk | Balsam Lake | <0.01 | <0.026 | 45°27′40″N 92°24′02″W﻿ / ﻿45.46111°N 92.40056°W﻿ / 45.46111; -92.40056﻿ (Rock Island) |
| Rock Island | Polk | Saint Croix River | <0.01 | <0.026 | 45°22′22″N 92°40′40″W﻿ / ﻿45.37278°N 92.67778°W﻿ / 45.37278; -92.67778﻿ (Rock Island) |
| Rosebrook Island | Grant | Mississippi River | 0.07 | 0.18 | 42°39′27″N 90°47′07″W﻿ / ﻿42.65750°N 90.78528°W﻿ / 42.65750; -90.78528﻿ (Rosebrook Island) |
| Rosebud Island | La Crosse | Mississippi River | 0.28 | 0.73 | 43°54′26″N 91°15′43″W﻿ / ﻿43.90722°N 91.26194°W﻿ / 43.90722; -91.26194﻿ (Rosebud Island) |
| Round Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°28′24″N 88°51′06″W﻿ / ﻿43.47333°N 88.85167°W﻿ / 43.47333; -88.85167﻿ (Round Island) |
| Round Island | Marinette | Menominee River | 0.01 | 0.026 | 45°29′42″N 87°48′00″W﻿ / ﻿45.49500°N 87.80000°W﻿ / 45.49500; -87.80000﻿ (Round Island) |
| Rudebush Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°29′29″N 88°36′25″W﻿ / ﻿43.49139°N 88.60694°W﻿ / 43.49139; -88.60694﻿ (Rudebush Island) |
| Rudys Island | Sawyer | Chippewa Flowage | <0.01 | <0.026 | 45°55′26″N 91°08′59″W﻿ / ﻿45.92389°N 91.14972°W﻿ / 45.92389; -91.14972﻿ (Rudys Island) |
| Sager Island | Dodge | Fox Lake | 0.01 | 0.026 | 43°34′37″N 88°53′49″W﻿ / ﻿43.57694°N 88.89694°W﻿ / 43.57694; -88.89694﻿ (Sager Island) |
| Saint Feriole Island | Crawford | Mississippi River | 0.49 | 1.3 | 43°03′25″N 91°09′20″W﻿ / ﻿43.05694°N 91.15556°W﻿ / 43.05694; -91.15556﻿ (Saint Feriole Island) |
| Sand Island | Sawyer | Chippewa Flowage | <0.01 | <0.026 | 45°55′06″N 91°14′10″W﻿ / ﻿45.91833°N 91.23611°W﻿ / 45.91833; -91.23611﻿ (Sand Island) |
| Saturday Islands | Menominee | Wolf River | 0.01 | 0.026 | 45°01′26″N 88°39′38″W﻿ / ﻿45.02389°N 88.66056°W﻿ / 45.02389; -88.66056﻿ (Saturday Islands) |
| Schmidt Island | Crawford | Mississippi River | 0.07 | 0.18 | 43°00′54″N 91°09′16″W﻿ / ﻿43.01500°N 91.15444°W﻿ / 43.01500; -91.15444﻿ (Schmidt Island) |
| Scott Island | Sawyer | Chippewa Flowage | 0.49 | 1.3 | 45°55′12″N 91°12′09″W﻿ / ﻿45.92000°N 91.20250°W﻿ / 45.92000; -91.20250﻿ (Scott Island) |
| Scout Island | Washburn | Shell Lake | 0.05 | 0.13 | 45°43′35″N 91°54′40″W﻿ / ﻿45.72639°N 91.91111°W﻿ / 45.72639; -91.91111﻿ (Scout Island) |
| Scrogum Island | Crawford | Mississippi River | 0.45 | 1.2 | 43°04′30″N 91°10′16″W﻿ / ﻿43.07500°N 91.17111°W﻿ / 43.07500; -91.17111﻿ (Scrogum Island) |
| Second Stony Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°29′06″N 88°37′21″W﻿ / ﻿43.48500°N 88.62250°W﻿ / 43.48500; -88.62250﻿ (Second Stony Island) |
| Seering Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°28′37″N 88°39′21″W﻿ / ﻿43.47694°N 88.65583°W﻿ / 43.47694; -88.65583﻿ (Seering Island) |
| Sheep Island | Columbia | Park Lake | 0.01 | 0.026 | 43°32′55″N 89°17′02″W﻿ / ﻿43.54861°N 89.28389°W﻿ / 43.54861; -89.28389﻿ (Sheep Island) |
| Sixty Islands | Marinette | Menominee River | 0.01 | 0.026 | 45°27′38″N 87°49′30″W﻿ / ﻿45.46056°N 87.82500°W﻿ / 45.46056; -87.82500﻿ (Sixty Islands) |
| Slingshot Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°39′51″N 91°14′11″W﻿ / ﻿43.66417°N 91.23639°W﻿ / 43.66417; -91.23639﻿ (Slingshot Island) |
| Small Fry Island | Vernon | Mississippi River | ? | ? | 43°38′33″N 91°13′44″W﻿ / ﻿43.64250°N 91.22889°W﻿ / 43.64250; -91.22889﻿ (Small Fry Island) |
| Small Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°29′28″N 88°52′18″W﻿ / ﻿43.49111°N 88.87167°W﻿ / 43.49111; -88.87167﻿ (Small Island) |
| Snake Island | Crawford | Mississippi River | 0.06 | 0.16 | 43°00′11″N 91°09′16″W﻿ / ﻿43.00306°N 91.15444°W﻿ / 43.00306; -91.15444﻿ (Snake Island) |
| Snake Tongue Island | Vernon | Mississippi River | 0.01 | 0.026 | 43°39′07″N 91°15′26″W﻿ / ﻿43.65194°N 91.25722°W﻿ / 43.65194; -91.25722﻿ (Snake Tongue Island) |
| Snipe Island | Buffalo | Mississippi River | 0.03 | 0.078 | 44°11′39″N 91°50′27″W﻿ / ﻿44.19417°N 91.84083°W﻿ / 44.19417; -91.84083﻿ (Snipe Island) |
| Snipe Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°27′36″N 88°52′28″W﻿ / ﻿43.46000°N 88.87444°W﻿ / 43.46000; -88.87444﻿ (Snipe Island) |
| Soft Shell Island | Vernon | Mississippi River | 0.36 | 0.93 | 43°37′52″N 91°15′49″W﻿ / ﻿43.63111°N 91.26361°W﻿ / 43.63111; -91.26361﻿ (Soft Shell Island) |
| Squak Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°31′44″N 88°40′16″W﻿ / ﻿43.52889°N 88.67111°W﻿ / 43.52889; -88.67111﻿ (Squak Island) |
| Steamboat Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°30′23″N 88°38′47″W﻿ / ﻿43.50639°N 88.64639°W﻿ / 43.50639; -88.64639﻿ (Steamboat Island) |
| Steamboat Island | Grant | Wisconsin River | 0.04 | 0.10 | 43°12′35″N 90°32′33″W﻿ / ﻿43.20972°N 90.54250°W﻿ / 43.20972; -90.54250﻿ (Steamboat Island) |
| Stephenson Island | Marinette | Menominee River | 0.02 | 0.052 | 45°06′07″N 87°37′45″W﻿ / ﻿45.10194°N 87.62917°W﻿ / 45.10194; -87.62917﻿ (Stephenson Island) |
| Stone Island | Dodge | Sinnissippi Lake | 0.01 | 0.026 | 43°22′15″N 88°36′56″W﻿ / ﻿43.37083°N 88.61556°W﻿ / 43.37083; -88.61556﻿ (Stone Island) |
| Stony Island | Dodge | Rock River | <0.01 | <0.026 | 43°28′46″N 88°38′53″W﻿ / ﻿43.47944°N 88.64806°W﻿ / 43.47944; -88.64806﻿ (Stony Island) |
| Stony Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°36′57″N 88°39′14″W﻿ / ﻿43.61583°N 88.65389°W﻿ / 43.61583; -88.65389﻿ (Stony Island) |
| Stout Island | Barron | Red Cedar Lake | 0.02 | 0.052 | 45°36′41″N 91°35′17″W﻿ / ﻿45.61139°N 91.58806°W﻿ / 45.61139; -91.58806﻿ (Stout Island) |
| Strawberry Island | Dodge | Horicon Marsh | 0.01 | 0.026 | 43°30′40″N 88°39′31″W﻿ / ﻿43.51111°N 88.65861°W﻿ / 43.51111; -88.65861﻿ (Strawberry Island) |
| Strawberry Island | Vilas | Flambeau Lake | 0.04 | 0.10 | 45°57′59″N 89°55′11″W﻿ / ﻿45.96639°N 89.91972°W﻿ / 45.96639; -89.91972﻿ (Strawberry Island) |
| Stroebe Island | Winnebago | Fox River | 0.11 | 0.28 | 44°14′06″N 88°27′17″W﻿ / ﻿44.23500°N 88.45472°W﻿ / 44.23500; -88.45472﻿ (Stroebe Island) |
| Stumpf Island | Grant | Mississippi River | 0.31 | 0.80 | 42°31′55″N 90°37′54″W﻿ / ﻿42.53194°N 90.63167°W﻿ / 42.53194; -90.63167﻿ (Stumpf Island) |
| Sunfish Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°40′09″N 91°13′32″W﻿ / ﻿43.66917°N 91.22556°W﻿ / 43.66917; -91.22556﻿ (Sunfish Island) |
| Sunset Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′37″N 91°14′43″W﻿ / ﻿43.64361°N 91.24528°W﻿ / 43.64361; -91.24528﻿ (Sunset Island) |
| Sweet Island | Iowa | Wisconsin River | 0.02 | 0.052 | 43°08′52″N 90°04′02″W﻿ / ﻿43.14778°N 90.06722°W﻿ / 43.14778; -90.06722﻿ (Sweet Island) |
| Tadpole Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′27″N 91°14′13″W﻿ / ﻿43.64083°N 91.23694°W﻿ / 43.64083; -91.23694﻿ (Tadpole Island) |
| Taylor Island | Jackson | Unnamed marsh | ? | ? | 44°11′19″N 90°23′24″W﻿ / ﻿44.18861°N 90.39000°W﻿ / 44.18861; -90.39000﻿ (Taylor Island) |
| Taylor Island | La Crosse | Mississippi River | 0.06 | 0.16 | 43°49′35″N 91°15′54″W﻿ / ﻿43.82639°N 91.26500°W﻿ / 43.82639; -91.26500﻿ (Taylor Island) |
| Terrell Island | Winnebago | Lake Butte des Morts | ? | ? | 44°04′18″N 88°39′47″W﻿ / ﻿44.07167°N 88.66306°W﻿ / 44.07167; -88.66306﻿ (Terrell Island) |
| Tivoli Island | Jefferson | Rock River | 0.01 | 0.026 | 43°11′16″N 88°42′23″W﻿ / ﻿43.18778°N 88.70639°W﻿ / 43.18778; -88.70639﻿ (Tivoli Island) |
| Trapping Island | Vernon | Mississippi River | <0.01 | <0.026 | 43°38′46″N 91°14′33″W﻿ / ﻿43.64611°N 91.24250°W﻿ / 43.64611; -91.24250﻿ (Trapping Island) |
| Treasure Island | Waukesha | Pine Lake | 0.01 | 0.026 | 43°06′34″N 88°23′03″W﻿ / ﻿43.10944°N 88.38417°W﻿ / 43.10944; -88.38417﻿ (Treasure Island) |
| Trumbull Island | Richland | Wisconsin River | 0.15 | 0.39 | 43°10′23″N 90°39′50″W﻿ / ﻿43.17306°N 90.66389°W﻿ / 43.17306; -90.66389﻿ (Trumbull Island) |
| Turtle Island | Vernon | Mississippi River | 0.02 | 0.052 | 43°40′00″N 91°15′19″W﻿ / ﻿43.66667°N 91.25528°W﻿ / 43.66667; -91.25528﻿ (Turtle Island) |
| Twin Island | Marinette | Menominee River | 0.12 | 0.31 | 45°16′03″N 87°42′16″W﻿ / ﻿45.26750°N 87.70444°W﻿ / 45.26750; -87.70444﻿ (Twin Island) |
| Twin Islands | Sauk | Wisconsin River | <0.01 | <0.026 | 43°13′29″N 89°49′17″W﻿ / ﻿43.22472°N 89.82139°W﻿ / 43.22472; -89.82139﻿ (Twin Islands) |
| Twin Islands | Walworth | Lake Beulah | 0.01 | 0.026 | 42°49′19″N 88°23′31″W﻿ / ﻿42.82194°N 88.39194°W﻿ / 42.82194; -88.39194﻿ (Twin Islands) |
| Van Tassle Island | Jackson | Unnamed marsh | ? | ? | 44°19′17″N 90°19′57″W﻿ / ﻿44.32139°N 90.33250°W﻿ / 44.32139; -90.33250﻿ (Van Tassle Island) |
| Virgin Island | Oconto | Wheeler Lake | <0.01 | <0.026 | 45°19′21″N 88°28′24″W﻿ / ﻿45.32250°N 88.47333°W﻿ / 45.32250; -88.47333﻿ (Virgin Island) |
| Wagon Wheel Island | Sawyer | Chippewa Flowage | <0.01 | <0.026 | 45°54′13″N 91°07′16″W﻿ / ﻿45.90361°N 91.12111°W﻿ / 45.90361; -91.12111﻿ (Wagon Wheel Island) |
| Wahbegon Island | Douglas | Saint Louis River | 0.01 | 0.026 | 46°39′07″N 92°16′29″W﻿ / ﻿46.65194°N 92.27472°W﻿ / 46.65194; -92.27472﻿ (Wahbegon Island) |
| Wahcoutah Island | Pepin | Chippewa River | 0.09 | 0.23 | 44°27′39″N 92°03′55″W﻿ / ﻿44.46083°N 92.06528°W﻿ / 44.46083; -92.06528﻿ (Wahcoutah Island) |
| Wallace Island | Polk | Wapogasset Lake | 0.06 | 0.16 | 45°20′20″N 92°25′40″W﻿ / ﻿45.33889°N 92.42778°W﻿ / 45.33889; -92.42778﻿ (Wallace Island) |
| Water Snake Island | Buffalo | Mississippi River | 0.02 | 0.052 | 44°12′32″N 91°50′51″W﻿ / ﻿44.20889°N 91.84750°W﻿ / 44.20889; -91.84750﻿ (Water Snake Island) |
| Wayside Island | Dodge | Beaver Dam Lake | <0.01 | <0.026 | 43°30′46″N 88°52′45″W﻿ / ﻿43.51278°N 88.87917°W﻿ / 43.51278; -88.87917﻿ (Wayside Island) |
| Weniger Island | Crawford | Wisconsin River | 0.32 | 0.83 | 42°59′45″N 91°03′41″W﻿ / ﻿42.99583°N 91.06139°W﻿ / 42.99583; -91.06139﻿ (Weniger Island) |
| Westerberg Island | Columbia | Wisconsin River | 0.06 | 0.16 | 43°31′55″N 89°28′05″W﻿ / ﻿43.53194°N 89.46806°W﻿ / 43.53194; -89.46806﻿ (Westerberg Island) |
| Wilcox Island | Douglas | Saint Croix Flowage | 0.34 | 0.88 | 46°15′37″N 91°50′47″W﻿ / ﻿46.26028°N 91.84639°W﻿ / 46.26028; -91.84639﻿ (Wilcox Island) |
| Williams Island | Waupaca | Chain O' Lakes | <0.01 | <0.026 | 44°20′35″N 89°08′56″W﻿ / ﻿44.34306°N 89.14889°W﻿ / 44.34306; -89.14889﻿ (Williams Island) |
| Willow Island | Chippewa | Chippewa River | <0.01 | <0.026 | 45°06′57″N 91°12′28″W﻿ / ﻿45.11583°N 91.20778°W﻿ / 45.11583; -91.20778﻿ (Willow Island) |
| Willow Island | Dodge | Horicon Marsh | <0.01 | <0.026 | 43°30′41″N 88°40′01″W﻿ / ﻿43.51139°N 88.66694°W﻿ / 43.51139; -88.66694﻿ (Willow Island) |
| Willow Sprig Island | Vernon | Mississippi River | 0.11 | 0.28 | 43°38′15″N 91°15′39″W﻿ / ﻿43.63750°N 91.26083°W﻿ / 43.63750; -91.26083﻿ (Willow Sprig Island) |
| Wolf Island | Sawyer | Moose Lake | 0.02 | 0.052 | 46°01′48″N 91°01′20″W﻿ / ﻿46.03000°N 91.02222°W﻿ / 46.03000; -91.02222﻿ (Wolf Island) |
| Woods Island | Forest | Pickerel Lake | <0.01 | <0.026 | 45°24′06″N 88°55′13″W﻿ / ﻿45.40167°N 88.92028°W﻿ / 45.40167; -88.92028﻿ (Woods Island) |
| Zacharias Island | Green Lake & Marquette | Fox River | 2.22 | 5.7 | 43°44′46″N 89°14′52″W﻿ / ﻿43.74611°N 89.24778°W﻿ / 43.74611; -89.24778﻿ (Zacharias Island) |