Summit Lake is an unincorporated community and census-designated place (CDP) in Langlade County, Wisconsin, United States.

Summit Lake is located along U.S. Route 45 17 miles (27 km) north of Antigo, in the towns of Upham and Elcho.

Summit Lake has a post office with ZIP code 54485.

[2] A post office called Summit Lake has been in operation since 1882.

This article about a location in Langlade County, Wisconsin is a stub.