The 1985 Australian Touring Car Championship was a CAMS sanctioned motor racing title for drivers of Touring Cars. It was the 26th running of the Australian Touring Car Championship and the first to be contested using regulations based on the FIA's International Group A regulations after having been run under CAMS home grown Group C rules between 1973 and 1984. The championship began on 10 February 1985 at Winton Motor Raceway (the track's first ever ATCC race) and ended on 14 July at Oran Park Raceway after ten rounds.
The championship was won by Jim Richards driving a BMW 635 CSi.