The 1990 Australian Touring Car season was the 31st year of touring car racing in Australia since the first runnings of the Australian Touring Car Championship and the fore-runner of the present day Bathurst 1000, the Armstrong 500.
There were 12 touring car race meetings held during 1990; an eight-round series, the 1990 Australian Touring Car Championship (ATCC); a support programme event at the 1990 Australian Grand Prix and a three-round series of long-distance races, nicknamed 'enduros', which counted towards both the 1990 Australian Endurance Championship and the 1990 Australian Manufacturers' Championship.