Electoral district of Newcastle (South Australia)

Newcastle was an electoral district of the House of Assembly in the Australian state of South Australia from 1884 to 1902 and again from 1915 to 1956.

The Newcastle electorate was based in the southern Flinders Ranges. In 1938, the polling places were Beltana, Blinman, Copley, Lynhurst Siding, Parachilna, Wooltana, Belton, Carrieton, Eurelia, Johnburgh, Yanyarrie, Cradock, Hawker, Hookina, Mernmerna, Warcowie, Farina, Marree, Oodnadatta, Bangor, Booleroo Centre, Melrose, Murray Town, Terka, Willowie, Wilmington, Black Rock, Morchard, Orroroo, Pekina, Walloway, Yatina, Boolcunda East, Bruce, Gordon, Hammond, Moockra, Wilson, Wyacca.