| Teams for 2001 O'Reilly 400 |
|---|
| Car | Team | Driver | Mfg |
|---|---|---|---|
| 0 | Richardson Motorsports | Brian Sockwell |  |
| 1 | Ultra Motorsports | Ted Musgrave |  |
| 2 | Ultra Motorsports | Scott Riggs | |
| 3 | Team Menard | David Starr | |
| 07 | Gene Christenson | Gene Christensen | |
| 08 | Gene Christenson | Bobby Dotter | |
| 8 | Bobby Hamilton | Willy T. Ribbs | |
| 14 | Tom Mitchell | Rick Crawford |  |
| 17 | Rick Hendrick | Ricky Hendrick | |
| 18 | Bobby Hamilton | Joe Ruttman | |
| 19 | James Murphy | Ricky Sanders | |
| 20 | Joe Gibbs | Coy Gibbs | |
| 21 | Shepherd Racing Ventures | Morgan Shepherd | |
| 23 | Team 23 Racing | Phil Bonifield | |
| 24 | Rick Hendrick | Jack Sprague | |
| 29 | Bob Keselowski | Terry Cook | |
| 32 | Matt Stowe | Eric Norris | |
| 38 | Kim Hansen | Patrick Lawler | |
| 41 | TKO Motorsports | Brendan Gaughan | |
| 43 | Richard Petty | Carlos Contreras | |
| 46 | Morgan-Dollar Motorsports | Dennis Setzer | |
| 49 | Doug Thompson | Trent Owens | |
| 50 | Jack Roush | Chuck Hossfeld | |
| 51 | Rick Ware | Donnie Neuenberger | |
| 55 | Powers Motorsports | Tom Powers | |
| 60 | Mike Addington | Travis Kvapil | |
| 61 | Ed Rensi | Randy Tolsma | |
| 72 | MacDonald Motorsports | Jimmy Hensley | |
| 73 | Sonntag Racing | Lance Hooper | |
| 75 | Wayne Spears | Billy Bigley, Jr. | |
| 81 | Rick Ware | Rich Woodland, Jr. | |
| 88 | Duke Thorson | Matt Crafton | |
| 89 | James Ligouri | Stan Boyd | |
| 90 | L & R Motorsports | Lance Norick | |
| 93 | Lonnie Troxell | Larry Gunselman | |
| 99 | Jack Roush | Nathan Haseleu | |
