Geneva Lake (Potawatomi: Kishwauketoe 'Clear Water')[2] is a body of freshwater in Walworth County in the southeastern portion of the U.S. state of Wisconsin.

[3] On its shores are the city of Lake Geneva and the villages of Fontana-on-Geneva-Lake and Williams Bay.

[citation needed] Geneva Lake was home to a band of Prairie Potawatomi prior to colonial settlement.

Lakeshore attractions include Big Foot Beach State Park, Lake Geneva Yacht Club, the George Williams College campus of Aurora University, and Yerkes Observatory.

The observatory is no longer owned by the University of Chicago, which transferred ownership of it to the non-profit Yerkes Future Foundation in May 2020.