South Savo (formerly Mikkeli) was an electoral district represented in the Finnish Eduskunta (parliament). It covered the administrative region of South Savo, with a population of 163,276 (). South Savo elected six members of the Eduskunta. The electoral district was merged with Kymi to form the new Southeastern Finland district.
The constituency is largely rural, and the only major city is Mikkeli. The traditionally dominant party in the parliamentary elections, the Centre Party, lost one seat in 2007 elections and is in even to National Coalition Party.