IROC XXX was the 30th season of the Crown Royal International Race of Champions, which began on Friday, February 17, 2006 at Daytona International Speedway. The all-star roster included thirteen drivers (in twelve cars) from seven premier racing series. Tony Stewart consistently ran up front and won two races to win the championship, ahead of the equally consistent Matt Kenseth by 12 points. As with the past two seasons, the drivers used their car colors and numbers from their native series (when feasible). This was also the first IROC season since 1991 to include a road course race (held on the Daytona International Speedway road course).
The roster of drivers and final points standings were as follows:[1]
Note: Initially Carl Edwards was announced as a driver for the 2006 season. Due to a conflict with the NASCAR Busch Series race at Memphis International Raceway in October, Edwards withdrew from IROC and was replaced by Ryan Newman.[2]
| Driver | DAY | TEX | DAY | ATL | Pts | ||
|---|---|---|---|---|---|---|---|
| 1 |  Tony Stewart | 8 | 1 | 1 | 3 | 77 | |
| 2 | 1 | 5 | 10 | 2 | 65 | ||
| 3 | Martin Truex Jr. | 5 | 3 | 6 | 1 | 57 | |
| 4 | 11 | 2 | 3 | 4 | 54 | ||
| 5 | Mark Martin | 12 | 4 | 9 | 6 | 47 | |
| 6 |  Max Papis | 4 | 10 | 2 | 8 | 46 | |
| 7 | Frank Kimmel | 3 | 8 | 8 | 7 | 40 | |
| 8 | Sam Hornish Jr. | 2 | 12 | 5 | 9 | 36 | |
| 9 | Wayne Taylor | 6 | 11 | 30 | |||
| Max Angelelli | 6 | 7 | |||||
| 10 | Scott Sharp | 9 | 7 | 4 | 12 | 29 | |
| 11 | Ted Musgrave | 10 | 9 | 12 | 5 | 24 | |
| 12 | Steve Kinser | 7 | 11 | 11 | 10 | 21 |