South Dakota's 6th 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 Republican Ernie Otten Jr. since 2025. In the House, it is represented by Republicans Aaron Aylward and Herman Otten.
The district is located in the southern suburbs of Sioux Falls entirely within Lincoln County, in southeastern South Dakota. Its largest city is Harrisburg.
South Dakota legislators are elected to two-year terms, with each permitted to serve a maximum of four consecutive two-year terms. Elections are held every even-numbered year.