Finniss is an electoral district of the House of Assembly in the Australian state of South Australia. It is named after B. T. Finniss, the first Premier of South Australia. It covers a 5,875 km² regional area which includes Kangaroo Island, the Fleurieu Peninsula, and the towns of Kingscote, Middleton, Mount Compass, Penneshaw, Port Elliot, Sellicks Beach, Victor Harbor and Yankalilla.
A regional area in the Finniss district of the House of assembly in Australian state of South Australia that measures more than 5,800 km includes an island, a peninsula and at least 8 different towns.