List of ecoregions in Wisconsin

The list of ecoregions in Wisconsin are listings of terrestrial ecoregions (see also, ecosystem) in the United States' State of Wisconsin, as defined separately by the United States Environmental Protection Agency (USEPA), and the World Wildlife Fund.

USEPA
The USEPA ecoregion classification system has four levels, but only Levels I, III, and IV are shown on this list. Level I divides North America into 15 broad ecoregions (or biomes). Wisconsin is within the Eastern Temperate Forest, and in the Great Plains, Level I regions. Level IV ecoregions (denoted by numbers and letters) are a further subdivision of Level III ecoregions (denoted by numbers alone).

Great Plains

 * 47 Western Corn Belt Plains
 * 47g - Prairie Pothole Region

Eastern Temperate Forest

 * 50 Northern Lakes and Forests
 * 50a - Lake Superior Clay Plain
 * 50b - Minnesota/Wisconsin Upland Till Plain
 * 50c - St. Croix Pine Barrens
 * 50d - Ontonagon Lobe Moraines and Gogebic Iron Range
 * 50e - Chequamegon Moraine and Outwash Plain
 * 50f - Blue Hills
 * 50g - Chippewa Lobe Rocky Ground Moraines
 * 50h - Perkinstown End Moraine
 * 50i - Northern Highlands Lakes Country
 * 50j - Brule and Paint River Drumlins
 * 50k - Wisconsin/Michigan Pine and Oak Barrens
 * 50l - Menominee Ground Moraine
 * 51 North Central Hardwood Forests
 * 51a - St. Croix Stagnation Moraines
 * 51b - Central Wisconsin Undulating Till Plain
 * 51c - Glacial Lake Wisconsin Sand Plain
 * 51d - Central Sand Ridges
 * 51e - Upper Wolf River Stagnation Moraine
 * 51f - Green Bay Till and Lacustrine Plain
 * 51g - Door Peninsula
 * 52 Driftless Area
 * 52a - Savanna Section
 * 52b - Coulee Section
 * 53 Southeastern Wisconsin Till Plains
 * 53a - Rock River Drift Plain
 * 53b - Kettle Moraines
 * 53c - Southeastern Wisconsin Savannah and Till Plain
 * 53d - Lake Michigan Lacustrine Clay Plain
 * 54 Central Corn Belt Plains
 * 54e - Chiwaukee Prairie Region