The 2003 Australian Drivers' Championship was a CAMS sanctioned national motor racing title for drivers of cars conforming to Formula 4000 regulations. The title was contested over a six-round, twelve race series which was promoted as the 2003 Holden Australian Drivers' Championship for the CAMS Gold Star. It was the 47th Australian Drivers' Championship. Apart from the seven wins claimed by Gaunt and Reid, three wins were taken by another New Zealander, Nelson Hartley (Reynard 94D & Reynard 97D), and two wins by Ricky Occhipinti (Reynard 97D and 98D).