The 1998 Toyota Atlantic Championship season was contested over 13 rounds.

The KOOL Toyota Atlantic Championship Drivers' Champion was Lee Bentham driving for Forsythe Racing.

Note: Race 3 stopped earlier due to rain, originally scheduled over 50 laps.

C2-class drivers were not able to score points in the main class.

Race 4 no additional point for the qualifying was awarded, because no session was held due to repair work on the track, starting lineup based on Friday morning practice times.