The 30th Assembly District of Wisconsin is one of 99 districts in the Wisconsin State Assembly. Located in western Wisconsin, the district comprises parts of southwest St. Croix County and northwest Pierce County. It includes the cities of Hudson and River Falls, as well as the village of North Hudson. It also contains the University of Wisconsin–River Falls campus, Willow River State Park, and Kinnickinnic State Park. The district is represented by Republican Shannon Zimmerman, since January 2017.

The Wisconsin State Assembly is the lower house of the Wisconsin Legislature. Together with the smaller Wisconsin Senate, the two constitute the legislative branch of the U.S. state of Wisconsin.