The Fleurieu Peninsula is a peninsula located south of Adelaide in South Australia, Australia. It was named after the French explorer and hydrographer Charles Pierre Claret de Fleurieu by the French explorer Nicolas Baudin as he mapped the south coast of Australia in 1802.

Towns of interest in the area include Victor Harbor, Willunga, Mount Compass, Normanville, Goolwa, Yankalilla, Rapid Bay and the wine region of McLaren Vale. Districts include Inman Valley, South Australia and Hindmarsh Valley. There is surfing on both the west and south facing coasts - known locally to Adelaide surfers as the Mid South Coast and the Far South Coast. Surf spots of note include Waitpinga and Middleton on the Far South Coast and Seaford and Moana on the Mid South Coast. A ferry travels between Cape Jervis, at the tip of the peninsula, and Kangaroo Island.