The Australian Manufacturers' Championship was a motor racing title awarded by the Confederation of Australian Motor Sport (CAMS) to the winning car manufacturer in an annual series of races held throughout Australia. Whilst the first two championships were open only to Group E Series Production Touring Cars subsequent championships through to 1991 were run to the same regulations as the Australian Touring Car Championship. The title has been revived twice since then, firstly in 1994 as a championship open to 2-litre Class II Touring Cars (soon to become known as Super Touring Cars) and from 2008 as a series for production cars, incorporating the Australian Production Car Championship.