The 1975 Australian Drivers' Championship was the nineteenth Australian Drivers' Championship. It was contested by drivers of Australian Formula 1 and Australian Formula 2 Racing cars over a five round series with points awarded on a 9, 6, 4, 3, 2, 1 basis to the top six placegetters in each round.
The championship winner was awarded the 1975 CAMS "Gold Star".
Results of the championship were as follows:
| Position | Driver | No. | Car | Entrant | Rd1 | Rd2 | Rd3 | Rd4 | Rd5 | Points |
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | John McCormack | 9 | Elfin MR6 Repco-Holden | Ansett Team Elfin | 3 | - | 9 | 9 | 6 | 27 |
| 2 | Johnnie Walker | 25 | Lola T332 Repco-Holden | John Walker | - | 9 | 3 | 6 | 4 | 22 |
| 3 | Max Stewart | 1 | Lola T400 Chevrolet | Sharp Racing Team | 9 | - | 6 | 4 | - | 19 |
| 4 | Kevin Bartlett | 5 | Lola T400 Chevrolet | Shell Racing | - | 4 | 1 | 3 | 9 | 17 |
| 5 | John Leffler | 7 | Bowin P8 Chevrolet | Grace Brothers Levis | 6 | 3 | 4 | - | 1 | 14 |
| 6 | Bruce Allison | 62 | Lola T332 Chevrolet | - | 6 | - | - | - | 6 | |
| 7 | Ray Winter | 27 | Mildren Ford | 4 | - | - | - | - | 4 | |
| 8 | Paul Bernasconi | 6 | Lola T330 Chevrolet | Sharp Racing Team | - | 2 | - | 2 | - | 4 |
| 9 | Enno Busselmann | 10 | Elfin 622 Ford | Enno Busselmann | - | - | - | - | 3 | 3 |
| 10 | Chris Milton | McLaren M22 Chevrolet | 2 | - | - | 1 | - | 3 | ||
| 11 | Garrie Cooper | 2 | Elfin MR5 Repco-Holden | Ansett Team Elfin | - | - | 2 | - | - | 2 |
| Ian Fergusson | Bowin P6 Ford | Ian Fergusson | - | - | - | - | 2 | 2 | ||
| 13 | John Goss | 2 | Matich A53 Repco Holden | - | 1 | - | - | - | 1 |
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