The 1977 Australian Sports Sedan Championship was a CAMS sanctioned national motor racing title for drivers of Sports Sedans complying with Group B regulations.
The championship was contested over a seven round series.
Round 1 was conducted as a single race and all other rounds were contested over two heats.
Championship points were awarded on a 9-6-4-3-2-1 basis to the top six placegetters in each round. Only the best six round results for each driver were counted. Where rounds were run over two heats, results were determined by awarding round points on a 20-16-13-11-10-9-8-7-6-5-4-3-2-1 basis to the top fourteen placegetters in each heat. Where round points were tied, the relevant round placing was awarded to the driver attaining the higher position in the second heat.