The 2011 Australian GT Championship was an Australian motor racing competition open to closed, production based sports cars which are either approved by the FIA for GT3 competition or approved by the Confederation of Australian Motor Sport (CAMS) for Australian GT.[1] It was sanctioned by CAMS as a National Championship with the Australian GT Sportscar Group Pty Ltd appointed by CAMS as the Category Manager.[1] The championship, which was the 15th Australian GT Championship, incorporated drivers titles in two divisions, GT Championship and GT Challenge. The former GT Production division was merged into the GT Challenge division for 2011.[1]
Mark Eddy won his second GT Championship. Driving his Melbourne Performance Centre prepared Audi R8 LMS the 2008 champion finished 36 points ahead of Klark Quinn (Mosler MT900 GT3 and Aston Martin DBRS9) and 99 points ahead of 2006 champion Greg Crick (Chrysler Viper GT3). Eddy only won one round, but it was the bonus point Phillip Island event at Round 5. Eddy also won races at Winton and Bathurst. Quinn won two races at the street circuits of Adelaide and Townsville, but fell behind Eddy after failing to finish in the second race at Phillip Island. Crick fell behind Eddy after failing to score any points at Bathurst. Peter Hackett, Dean Grant and Kevin Weeks all claimed race wins during the course of the season.
The GT Challenge division was won by Porsche driver Peter Boylan, defeating Lotus driver Tim Poulton by 63 points. They were the only two GT Challenge drivers to complete more than half of the season.