| Teams 2012 Sam's Town 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 1 | JD Motorsports | Mike Wallace | Chevrolet |
| 2 | Richard Childress Racing | Elliott Sadler | Chevrolet |
| 3 | Richard Childress Racing | Austin Dillon | Chevrolet |
| 4 | JD Motorsports | Daryl Harr | Chevrolet |
| 6 | Roush Fenway Racing | Ricky Stenhouse, Jr. | Ford |
| 7 | JR Motorsports | Danica Patrick | Chevrolet |
| 8 | Randy Hill Racing | Kyle Fowler | Ford |
| 9 | RAB Racing | Kenny Wallace | Toyota |
| 10 | TriStar Motorsports | Jeff Green | Toyota |
| 11 | Joe Gibbs Racing | Brian Scott | Toyota |
| 12 | Team Penske | Sam Hornish, Jr. | Dodge |
| 13 | Jennifer Jo Cobb Racing | Jennifer Jo Cobb | Dodge |
| 14 | TriStar Motorsports | Eric McClure | Toyota |
| 18 | Joe Gibbs Racing | Mark Martin | Toyota |
| 19 | TriStar Motorsports | Tayler Malsam | Toyota |
| 22 | Team Penske | Brad Keselowski | Dodge |
| 23 | R3 Motorsports | Robert Richardson, J | Chevrolet |
| 24 | SR2 Motorsports | Benny Gordon | Chevrolet |
| 27 | GC Motorsports International | J.J. Yeley | Ford |
| 28 | Jay Robinson Racing | Derrike Cope | Dodge |
| 30 | Turner Scott Motorsports | James Buescher | Chevrolet |
| 31 | Turner Scott Motorsports | Justin Allgaier | Chevrolet |
| 33 | Richard Childress Racing | Brendan Gaughan | Chevrolet |
| 38 | Turner Scott Motorsports | Kasey Kahne | Chevrolet |
| 39 | Go Green Racing | Joey Gase | Ford |
| 40 | Key Motorsports | Erik Darnell | Chevrolet |
| 41 | Rick Ware Racing | Blake Koch | Ford |
| 42 | Key Motorsports | Josh Wise | Chevrolet |
| 43 | Richard Petty Motorsports | Michael Annett | Ford |
| 44 | TriStar Motorsports | Mike Bliss | Toyota |
| 46 | Key Motorsports | Chase Miller | Chevrolet |
| 47 | Key Motorsports | Scott Speed | Chevrolet |
| 50 | Beaver Motosports | T.J. Bell | Chevrolet |
| 51 | Jeremy Clements Racing | Jeremy Clements | Chevrolet |
| 52 | Jimmy Means Racing | Tim Schendel | Chevrolet |
| 54 | Kyle Busch Motorsports | Kyle Busch | Toyota |
| 60 | Roush Fenway Racing | Trevor Bayne | Ford |
| 70 | ML Motorsports | Johanna Long | Chevrolet |
| 74 | Mike Harmon Racing | Mike Harmon | Chevrolet |
| 81 | MacDonald Motorsports | Jason Bowles | Toyota |
| 87 | NEMCO Motorsports | Joe Nemechek | Toyota |
| 88 | JR Motorsports | Cole Whitt | Chevrolet |
| 89 | Shepherd Racing Ventures | Morgan Shepherd | Chevrolet |