1975 Trans-Am Series
The 1975 Trans-Am Series was the tenth running of the Sports Car Club of America's premier series. All races except for the Six Hours of Watkins Glen ran for approximately one hundred miles.
The Drivers Championship was won by John Greenwood and the Manufacturers title was awarded to Chevrolet.
Results
| Round | Date | Circuit | Winning driver | Winning vehicle |
| 1 | June 1 | Pocono |  |