1990 Australian Touring Car Championship

The 1990 Australian Touring Car Championship was a CAMS sanctioned Australian motor racing title open to Group 3A Touring Cars. The championship, which was the 31st Australian Touring Car Championship, was promoted as the Shell Ultra Australian Touring Car Championship. It began on 25 February 1990 at Amaroo Park and ended on 15 July at Oran Park Raceway after eight rounds.

The title was won by Jim Richards, his third Australian Touring Car Championship victory. Richards drove for Nissan Motorsport Australia, utilising both Nissan Skyline HR31 GTS-R and the new Skyline R32 GT-R during one of the most competitive seasons in the history of the championship.