The Gardner Swamp Wildlife Area is a 1,180 acres (480 ha) tract of protected land located in Door County, Wisconsin, managed by the Wisconsin Department of Natural Resources.

Land cover types include Upland Broad-leaved Deciduous Forest, Upland Grass, Open Wetland/Marsh, Shrub Wetland, and the most commonly found, Forested Wetland, which covers 442 acres (179 ha), or 38% of the entire Wildlife Area.

[4][5] The above-mentioned river, Keyes Creek, in addition to bisecting the Wildlife Area, is also classified as a Class II Trout Stream, and is used as a spawning ground for Northern pike and White sucker.

In addition to varied species of fish that can be found in Keyes Creek, the Wildlife Area is home to various waterfowl, deer, beaver, woodcock, shorebirds, and the occasional bald eagle.

[6] The Wildlife Area is also home to the critically endangered Hine's emerald dragonfly.