| 2005 Toyota Atlantic Championship season | |
|---|---|
| Toyota Atlantic Championship Presented by Yokohama | |
| Season | |
| Races | 12 |
| Start date | April 10th |
| End date | August 28th |
| Awards | |
| Drivers' champion |  Charles Zwolsman Jr. |
The 2005 Toyota Atlantic Championship season was contested over 12 rounds. 14 different teams and 27 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 12 different drivers competed, but none of them for the whole season. The Toyota Atlantic Championship Presented by Yokohama Drivers' Champion was Charles Zwolsman Jr. driving for Condor Motorsports.