The 1974 Australian Manufacturers' Championship was an Australian motor racing competition for Group C Touring Cars.[1] It was authorised by Confederation of Australian Motor Sport as an Australian National Title.
The championship, which was the fourth Australian Manufacturers' Championship, was won by General Motors-Holden's.[2]
The championship was contested over a five round series with each round being a single race staged over a minimum distance of 250 km.[1] [3]
| Round | Race title | Circuit | State | Date | Winning driver(s) | Winning car | Entrant | Report | |
| 1 | Chesterfield 250[4] | Adelaide International Raceway | South Australia | 25 August |  Colin Bond | Holden LH Torana SL/R 5000 | Marlboro Holden Dealer Team | ||
| 2 | Sandown 250[5] | Sandown Park | Victoria | 8 September |  Allan Moffat | Ford XB Falcon GT Hardtop | Allan Moffat Racing | Report | |
| 3 | Hardie-Ferodo 1000 | Mount Panorama, Bathurst | New South Wales | 6 October | Ford XA Falcon GT Hardtop | McLeod Ford-2UW[6] | Report | ||
| 4 | Chesterfield 300[7] | Surfers Paradise | Queensland | 10 November | Colin Bond | Holden LH Torana SL/R 5000 | Marlboro Holden Dealer Team | ||
| 5 | RE-PO 500K[8] | Phillip Island | Victoria | 24 November | Colin Bond | Holden LH Torana SL/R 5000 | Marlboro Holden Dealer Team[9] | Report |
Cars competed in four engine capacity classes.[1]
For all rounds except the Bathurst round, championship points were awarded on a 9-8-7-6-5-4-3-2-1 basis for the first nine positions in each class plus 4-3-2-1 for the first four positions outright.[1] For the Bathurst round only, championship points were awarded on an 18-16-14-12-10-8-6-4-2 basis for the first nine positions in each class plus 4-3-2-1 for the first four positions outright.[1] Only the best placed car from each manufacturer was eligible to score points.[1]
| Position | Manufacturer[10] | Ade. | San. | Bat. | Sur. | Phi. | Total. | |
| 1 | Holden | 13 | 11 | 15 | 13 | 13 | 65 | |
| 2 | Ford | 11 | 13 | 22 | 4 | 9 | 59 | |
| 3 | 11 | 9 | 18 | 9 | 9 | 56 | ||
| 4 | 9 | 9 | 18 | 9 | 9 | 54 | ||
| 5 | 7 | 8 | 18 | 6 | - | 39 | ||
| = | Datsun | 9 | 9 | 12 | - | 9 | 39 | |
| 7 | 8 | 6 | 12 | 4 | 6 | 36 | ||
| 8 | - | 6 | - | - | - | 6 |