The 1999 Trans-Am Series was the 34th season of the Sports Car Club of America's Trans-Am Series. 1999 was the end of the "American muscle revival" era of Trans-Am, as Italian manufacturer Qvale would win the championship the following year. Ford would sweep the season. Paul Gentilozzi won the drivers' championship.
| Rnd | Date | Circuit | Winning driver | Winning vehicle |
|---|---|---|---|---|
| 1 | April 18 | Long Beach street circuit | | Ford Mustang |
| 2 | May 23 | Mosport International Raceway | | Ford Mustang |
| 3 | May 31 | Lime Rock Park | | Ford Mustang |
| 4 | June 6 | Mid-Ohio Sports Car Course | | Ford Mustang |
| 5 | July 10 | Road America | | Ford Mustang |
| 6 | July 25 | Road Atlanta | | Ford Mustang |
| 7 | August 1 | Circuit Trois-Rivières | | Ford Mustang |
| 8 | August 7 | Belle Isle Park | | Ford Mustang |
| 9 | August 29 | Grand Rapids street circuit | | Ford Mustang |
| 10 | September 4 | Vancouver street circuit | | Ford Mustang |
| 11 | September 25 | Houston street circuit | | Ford Mustang |
| 12 | October 3 | Pikes Peak International Raceway | | Ford Mustang |
| 13 | October 17 | Sebring International Raceway | | Ford Mustang |
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