The 1975 Australian Sports Car Championship was a CAMS sanctioned Australian motor racing title open to Group A Sports Cars and Group D Production Sports Cars. The championship was contested over a single race staged at the Phillip Island circuit in Victoria, Australia on 30 November 1975. The race was run over 30 laps of the 4.76 km circuit, a total race distance of 143 km. It was the seventh Australian Sports Car Championship, and the only one in the twenty-year history of the title to be contested over a single race rather than over a series of races.
The championship was won by Garrie Cooper, driving an Elfin MS7.