The 1966 Australian Drivers' Championship was a CAMS sanctioned Australian motor racing title for drivers of racing cars complying with either the Australian National Formula or the Australian 1½ Litre Formula.^[1] The winner of the title, which was the tenth Australian Drivers' Championship, was awarded the 1966 CAMS Gold Star.^[2]

The championship was won by Spencer Martin driving a Repco-Brabham BT11A Coventry Climax for Bob Jane Racing.

The championship was contested over a six-round series with one race per round.^[3]

Each round also incorporated a round of the 1966 Australian One and a Half Litre Championship.^[1]

Championship points were awarded on a 9-6-4-3-2-1 basis to the first six finishers in each round. Only the best five round results could be obtained by each driver.^[1]

The championship was open to holders of a General Competition License issued by CAMS.^[1]

Note:

• Kerry Grant placed sixth at Lakeside ^[3] however the New Zealand driver ^[8] was not awarded championship points.^[6]
• Roly Levis placed sixth at Surfers Paradise ^[3] however the New Zealand driver ^[9] was not awarded championship points.^[6]
• Frank Gardner (Repco-Brabham) won the Hordern Trophy but was not awarded championship points as he was not classified as an "Australian Resident".^[10]