| Teams 2009 O'Reilly Auto Parts 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 0 | JD Motorsports | J.C. Stout | Chevrolet |
| 1 | Phoenix Racing | Mike Bliss | Chevrolet |
| 1 | JD Motorsports | Danny O'Quinn, Jr. | Chevrolet |
| 2 | Corrie Stott Racing | Andy Ponstein | Chevrolet |
| 5 | JR Motorsports | Dale Earnhardt, Jr. | Chevrolet |
| 5 | Day Enterprise Racing | Casey Atwood | Ford |
| 6 | Roush Fenway Racing | David Ragan | Ford |
| 7 | SK Motorsports | David Green | Toyota |
| 9 | RAB Racing | John Wes Townley | Ford |
| 10 | Braun Motorsports | David Reutimann | Toyota |
| 11 | CJM Racing | Scott Lagasse, Jr. | Toyota |
| 12 | Team Penske | Justin Allgaier | Dodge |
| 15 | Germain Racing | Michael Annett | Toyota |
| 16 | Roush Fenway Racing | Matt Kenseth | Ford |
| 18 | Joe Gibbs Racing | Kyle Busch | Toyota |
| 20 | Joe Gibbs Racing | Joey Logano | Toyota |
| 23 | R3 Motorsports | Robert Richardson, J | Chevrolet |
| 24 | Team Rensi Motorsports | Eric McClure | Ford |
| 27 | Baker Curb Racing | Jason Keller | Ford |
| 28 | Jay Robinson Racing | Kenny Wallace | Chevrolet |
| 29 | Richard Childress Racing | Jeff Burton | Chevrolet |
| 32 | Braun Motorsports | Burney Lamar | Toyota |
| 33 | Kevin Harvick Incorporated | Tony Stewart | Chevrolet |
| 34 | Front Row Motorsports | Tony Raines | Chevrolet |
| 38 | Braun Motorsports | Jason Leffler | Toyota |
| 42 | Smith-Ganassi Racing | Kenny Hendrick | Dodge |
| 47 | JTG Daughtery Racing | Michael McDowell | Toyota |
| 52 | Jimmy Means Racing | Kevin Lepage | Chevrolet |
| 60 | Roush Fenway Racing | Carl Edwards | Ford |
| 61 | Specialty Racing | Brandon Whitt | Ford |
| 62 | Rusty Wallace Racing | Brendan Gaughan | Chevrolet |
| 66 | Rusty Wallace Racing | Steve Wallace | Chevrolet |
| 70 | ML Motorsports | Shelby Howard | Chevrolet |
| 77 | Cardinal Motorsports | Peyton Sellers | Chevrolet |
| 81 | MacDonald Motorsports | Kevin Hamlin | Dodge |
| 87 | NEMCO Motorsports | Joe Nemechek | Chevrolet |
| 88 | JR Motorsports | Brad Keselowski | Chevrolet |
| 89 | Shepherd Racing Ventures | Morgan Shepherd | Chevrolet |
| 90 | Phil Parsons Racing | Johnny Chapman | Chevrolet |
| 91 | Phil Parsons Racing | Terry Cook | Chevrolet |
| 96 | Whitney Motorsports | Brian Keselowski | Dodge |
| 98 | Yates Racing | Paul Menard | Ford |
| 99 | Michael Waltrip Racing | Michael Waltrip | Toyota |