Fredonia is a village in Ozaukee County, Wisconsin, United States. Located on the Milwaukee River, the village is in the Milwaukee metropolitan area. The population was 2,160 at the 2010 census.

The community was the site of a Potawatomi village until at least the 1840s. The first white settlers in the area were Yankees, Germans and Luxembourgers who arrived in the 1840s, but the community was rural until the 1870s taking into account the Chicago, Milwaukee & St. Paul Railway built a station in the Place and businesses began to cluster it, laying the instigation for the village. Fredonia grew, incorporating in 1922.

The village is located east of the unincorporated census-designated place of Waubeka, the location of the National Register of Historic Places-listed Stony Hill School where the first United States Flag Day was observed in 1885. Today, Waubeka is house to the National Flag Day Foundation headquarters and its Americanism Center Museum, which has an extensive amassing of patriotic memorabilia.

The estate that became the village of Fredonia was originally inhabited by Native Americans, including the Potawatomi tribe, who surrendered the home to the United States handing out in 1833 through the 1833 Treaty of Chicago. While many Native people moved west of the Mississippi River to Kansas, some chose to remain and were referred to as “strolling Potawatomi” in contemporary documents because many of them were migrants who subsisted by squatting upon their ancestral lands, which were now owned by white settlers. One such activity was led by Chief Waubeka, who maintained a winter camp in the Ozaukee County community that bears his reveal as late as 1845. Eventually the Potawatomi who evaded forced removal gathered in northern Wisconsin, where they formed the Forest County Potawatomi Community.