Sulkava is a municipality of Finland. It is located in the Southern Savonia region. The municipality has a population of 2,366 (31 October 2024) and covers an area of 769.20 square kilometres (296.99 sq mi) of which 184.52 km2 (71.24 sq mi) is water. The population density is 4.05 inhabitants per square kilometre (10.5/sq mi).
Neighbouring municipalities are Juva, Puumala, Rantasalmi, Ruokolahti and Savonlinna.
The municipality is unilingually Finnish.
The municipality is best known for the annual long distance rowing contest, Sulkavan Suursoudut, around Partalansaari ("Partala Island") on lake Saimaa.