| Teams 2001 O'Reilly 400 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 0 | Richardson Motorsports | Brian Sockwell | Chevrolet |
| 1 | Ultra Motorsports | Ted Musgrave | Dodge |
| 2 | Ultra Motorsports | Scott Riggs | Dodge |
| 3 | Team Menard | David Starr | Chevrolet |
| 07 | SS Green Light Racing | Gene Christensen | Chevrolet |
| 8 | Bobby Hamilton Racing | Willy T. Ribbs | Dodge |
| 08 | SS Green Light Racing | Bobby Dotter | Chevrolet |
| 14 | Circle Bar Racing | Rick Crawford | Ford |
| 17 | Hendrick Motorsports | Ricky Hendrick | Chevrolet |
| 18 | Bobby Hamilton Racing | Joe Ruttman | Dodge |
| 19 | James Murphy | Ricky Sanders | Ford |
| 20 | Joe Gibbs Racing | Coy Gibbs | Chevrolet |
| 21 | Shepherd Racing Ventures | Morgan Shepherd | Ford |
| 23 | Team 23 Racing | Phil Bonifield | Chevrolet |
| 24 | Hendrick Motorsports | Jack Sprague | Chevrolet |
| 29 | K-Automotive Performance | Terry Cook | Ford |
| 32 | Matt Stowe | Eric Norris | Chevrolet |
| 38 | Kim Hansen | Patrick Lawler | Chevrolet |
| 41 | TKO Motorsports | Brendan Gaughan | Dodge |
| 43 | Petty Enterprises | Carlos Contreras | Dodge |
| 46 | Dollar Racing | Dennis Setzer | Chevrolet |
| 49 | Covenant Racing Team | Trent Owens | Ford |
| 50 | Roush Racing | Chuck Hossfeld | Ford |
| 51 | Rick Ware Racing | Donnie Neuenberger | Chevrolet |
| 55 | Powers Motorsports | Tom Powers | Dodge |
| 60 | Addington Racing | Travis Kvapil | Chevrolet |
| 61 | Team Rensi Motorsports | Randy Tolsma | Chevrolet |
| 72 | MacDonald Motorsports | Jimmy Hensley | Chevrolet |
| 73 | Sonntag Racing | Lance Hooper | Chevrolet |
| 75 | Spears Motorsports | Billy Bigley, Jr. | Chevrolet |
| 81 | Rick Ware Racing | Rich Woodland, Jr. | Chevrolet |
| 88 | ThorSport Racing | Matt Crafton | Chevrolet |
| 89 | EVI Motorsports | Stan Boyd | Chevrolet |
| 90 | L & R Motorsports | Lance Norick | Chevrolet |
| 93 | Troxell Racing | Larry Gunselman | Dodge |
| 99 | Roush Racing | Nathan Haseleu | Ford |