The 1981 Trans-Am Series was the sixteenth running of the Sports Car Club of America's premier series. All races ran for approximately one hundred miles.[1]
| Round | Date | Circuit | Winning driver | Winning vehicle | |
|---|---|---|---|---|---|
| 1 | May 17 |  Charlotte |  Eppie Wietzes | Chevrolet Corvette | |
| 2 | July 4 | Lime Rock | Greg Pickett | Chevrolet Corvette | |
| 3 | July 25 | Road America | Monte Sheldon | Porsche 911 | |
| 4 | July 26 | Road America | Monte Sheldon | Porsche 911 | |
| 5 | August 9 | Brainerd | Bob Tullius | Jaguar XJS | |
| 6 | September 6 | Trois-Rivieres | Eppie Wietzes | Chevrolet Corvette | |
| 7 | September 12 | Mosport | Bob Tullius | Jaguar XJS | |
| 8 | October 11 | Laguna Seca | George Follmer | Chevrolet Camaro | |
| 9 | October 25 | Sears Point | Tom Gloy | Ford Mustang |