The 1970 Australian Touring Car Championship was a CAMS-sanctioned motor racing title for drivers of Group C Improved Production Touring Cars and Group E Series Production Touring Cars. The title, which was the eleventh Australian Touring Car Championship, began at Calder Park Raceway on 22 March 1970 and ended at Symmons Plains Raceway on 15 November after seven heats.
The 1970 ATCC saw the first championship win for an Australian made car when Norm Beechey drove his Holden Monaro HT GTS350 to victory over the Porsche 911S of team mate Jim McKeown. Finishing in third and fourth place were the Ford Mustangs of Bob Jane and four-time defending champion Ian Geoghegan.
Allan Moffat's victory in the opening round at Calder Park created history as the Canadian became the first non-Australian born driver to win an ATCC race. It was the first of an eventual 32 ATCC round wins for Moffat before his final win in Round 3 of the 1984 championship at Wanneroo Park.
The following drivers competed in the 1970 championship. The list is not exhaustive.
The championship was contested over a series of seven heats.
Allan Moffat took pole position for the opening round of the championship ahead of Ian Geoghegan and Bob Jane. Geoghegan challenged Moffat for the lead at the first corner but Moffat held the position. Norm Beechey, starting down the order, made his way into fourth place on the first lap before passing both Jane and Geoghegan at the beginning of lap 2. He eventually passed Moffat for the lead before making slight contact with a lapped car, forcing him to pull over to the side of the track and pull the guard off of his front tyre.