The 91st Assembly district of Wisconsin is one of 99 districts of the Wisconsin State Assembly.

[1] Located in western Wisconsin, the district comprises the eastern half of Eau Claire County and part of southeast Chippewa County.

It includes the downtown and the east side of the city of Eau Claire, along with the cities of Altoona and Augusta, and the villages of Cadott, Fairchild, and Fall Creek.

The district contains landmarks such as Confluence Commercial Historic District, and the historic U.S. Post Office and Courthouse.

[2] The district is represented by Democrat Jodi Emerson, since January 2019.