The 1975 Australian Drivers' Championship was a CAMS sanctioned Australian motor racing title open to Australian Formula 1 cars and Australian Formula 2 cars. The championship winner was awarded the 1975 CAMS "Gold Star". The title, which was the nineteenth Australian Drivers' Championship, was won by John McCormack driving an Elfin MR6 Repco-Holden.
The championship was contested over a five round series.
Championship points were awarded on a 9, 6, 4, 3, 2, 1 basis to the first six placegetters at each round. Only holders of a current and valid full General Competition License issued by CAMS were eligible.
Note: New Zealander Graeme Lawrence placed fourth in the Surfers Paradise round but was not eligible to score championship points.
Contemporary publications used various names for the championship including Australian Formula 1 Championship, Australian Drivers' Championship and Australian National Formula One Championship.CAMS uses the term Australian Drivers' Championship in its historical documentation and this term has been used in this article.