The 2004 Toyota Atlantic Championship season was contested over 12 rounds. 11 different teams and 24 different drivers competed. In this one-make formula all drivers had to utilize Swift chassis and Toyota engines. This season also saw a C2-class running older Swift chassis and Toyota engines. In C2-class five different drivers competed, but none of them for the whole season. The Toyota Atlantic Championship Presented by Yokohama Drivers' Champion was Jon Fogarty driving for Pacific Coast Motorsports.
Scoring system
R19=retired, but classified NS=did not start (8)=place after practice, but grid position not held free