South Dakota's 15th legislative district is one of 35 districts in the South Dakota Legislature. Each district is represented by 1 senator and 2 representatives. In the Senate, it has been represented by Democrat Jamie Smith since 2025. In the House, it has been represented by Democrats Linda Duba since 2019 and Kadyn Wittman since 2023.
The district is located in Sioux Falls entirely within Minnehaha County, the state's most populous county, in southeastern South Dakota.