The 39th Assembly district of Wisconsin is one of 99 districts in the Wisconsin State Assembly. Located in central Wisconsin, the district comprises all of Green Lake and Marquette counties, along with much of western Fond du Lac County and parts of northeast Columbia County, southeast Winnebago County, and eastern Adams County. It includes the cities of Berlin, Green Lake, Markesan, Montello, Princeton, and Ripon. The district also contains Fox River National Wildlife Refuge, Summerton Bog, Ripon College and the historic Little White Schoolhouse in Ripon—the birthplace of the Republican Party. The district is represented by Republican Alex Dallman, since January 2025; Dallman previously represented the 41st district from 2021 to 2025.