| Teams for 2003 OReilly 200 |
|---|
| Car | Team | Driver | Mfg |
|---|---|---|---|
| 1 | Ultra Motorsports | Ted Musgrave |  |
| 01 | Fans Racing | Lance Hooper |  |
| 2 | Ultra Motorsports | Jason Leffler | |
| 4 | Bobby Hamilton | Bobby Hamilton | |
| 5 | Rick Ware | Jerry Hill | |
| 6 | Kevin Harvick | Kevin Harvick |  |
| 07 | Gene Christenson | Johnny Chapman | |
| 8 | Bobby Hamilton | Bill Lester | |
| 08 | Gene Christenson | Jody Lavender | |
| 9 | Fasscore Motorsports | Johnny Sauter | |
| 14 | Tom Mitchell | Rick Crawford | |
| 15 | Billy Ballew | Ryan Hemphill | |
| 16 | Steve Coulter | Travis Kvapil | |
| 18 | Bobby Hamilton | Chad Chaffin | |
| 19 | Scott Upshaw | Wayne Edwards | |
| 21 | Shepherd Racing Ventures | Morgan Shepherd | |
| 23 | Team Racing | Phil Bonifield | |
| 25 | Team Racing | Jamie Aube | |
| 29 | Bob Keselowski | Terry Cook | |
| 33 | Andy Petree | Paul Menard | |
| 35 | Gary Keller Racing | Tim Sauter | |
| 46 | Morgan-Dollar Motorsports | Dennis Setzer | |
| 50 | Jack Roush | Jon Wood | |
| 51 | Rick Ware | Doug Keller | |
| 52 | Ken Schrader | Ken Schrader | |
| 53 | Mary Ward | Randy Briggs | |
| 59 | James Harris | Robert Pressley | |
| 62 | Orleans Racing | Brendan Gaughan | |
| 63 | MB Motorsports | David Stover | |
| 72 | MacDonald Motorsports | Randy MacDonald | |
| 75 | Wayne Spears | David Starr | |
| 86 | Team Racing | Brad Teague | |
| 88 | Duke Thorson | Matt Crafton | |
| 93 | Lonnie Troxell | Roland Isaacs | |
| 99 | Jack Roush | Carl Edwards | |
