2018 Australian GT Championship

The 2018 Australian GT Championship was the 22nd running of the Australian GT Championship, a CAMS-sanctioned Australian motor racing championship open to FIA GT3 cars and similar cars as approved for the championship. The championship commenced on 23 March 2018 at the Melbourne Grand Prix Circuit and concluded on 14 October at Hampton Downs Motorsport Park. The 2018 Australian Endurance Championship was contested concurrently with Rounds 2, 4 and 6 of the GT Championship. It was the 15th Australian Endurance Championship.

The Australian GT Championship was won by Geoff Emery driving an Audi R8 LMS and the Australian Endurance Championship by Max Twigg and Tony D'Alberto who shared a Mercedes-AMG GT3.