The 84th Assembly district of Wisconsin is one of 99 districts in the Wisconsin State Assembly.

[1] Located in southeast Wisconsin, the district comprises part of southeast Waukesha County and northwest Racine County.

It includes the villages of Big Bend, Mukwonago, Vernon, and Waterford, and most of the city of Muskego.

[2] The district is represented by Republican Chuck Wichgers, since January 2025; Wichgers previously represented the 82nd district from 2023 to 2025 and the 83rd district from 2017 to 2023.

[3] The 84th Assembly district is located within Wisconsin's 28th Senate district, along with the 82nd and 83rd Assembly districts.