The Main Street Historic District in Lake Geneva, Wisconsin is a 2.5-acre (1.0 ha) historic district that was listed on the National Register of Historic Places on January 11, 2002.

The listing was amended in some way in a revised listing on March 5, 2002.

In 2002, there were 20 buildings in the district that were deemed to contribute to its historic character.

[1] The district consists of most of the buildings in the 700 block of Main Street, and is drawn to exclude non-historic buildings.

[2] Contributing buildings include, in order built: