Fox River National Wildlife Refuge, managed by staff at Horicon National Wildlife Refuge, encompasses 1,004 acres of wetland and upland habitat along the Fox River in Marquette County, Wisconsin. Refuge staff restores, enhances, and preserves the oak savanna upland and sedge meadow wetland habitats historically found in extensive areas along the Fox River. Staff manages the wildlife populations that use these habitats, with special emphasis on those species dependent upon large expanses of natural marsh, such as the greater sandhill crane. Other management objectives include protecting the habitats of any Federal or State endangered or threatened species that may utilize the refuge, such as bald eagles, and to make the refuge available for outdoor recreation, environmental education, and other public use activities compatible with the above objectives.

From Portage, take Highway 33 east to County Highway F north; from Montello, take Highway 22 south to County Highway F south. Refuge is on west side of County Highway F, across from John Muir County Park.