| Teams 2015 Alert Today Florida 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 1 | JD Motorsports | Landon Cassill | Chevrolet |
| 1 | Roush Fenway Racing | Elliott Sadler | Ford |
| 2 | Richard Childress Racing | Brian Scott | Chevrolet |
| 3 | Richard Childress Racing | Ty Dillon | Chevrolet |
| 4 | JD Motorsports | Ross Chastain | Chevrolet |
| 6 | Roush Fenway Racing | Bubba Wallace | Ford |
| 7 | JR Motorsports | Regan Smith | Chevrolet |
| 8 | TriStar Motorsports | Blake Koch | Toyota |
| 9 | JR Motorsports | Chase Elliott | Chevrolet |
| 10 | TriStar Motorsports | Scott Lagasse, Jr. | Toyota |
| 13 | MBM Motorsports / Garage 66 | Chris Cockrum | Chevrolet |
| 14 | TriStar Motorsports | Cale Conley | Toyota |
| 16 | Roush Fenway Racing | Ryan Reed | Ford |
| 18 | Joe Gibbs Racing | Daniel Suarez | Toyota |
| 20 | Joe Gibbs Racing | Erik Jones | Toyota |
| 22 | Team Penske | Brad Keselowski | Ford |
| 24 | JGL Racing | Eric McClure | Toyota |
| 25 | Athenian Motorsports | John Wes Townley | Chevrolet |
| 26 | JGL Racing | Mike Wallace | Toyota |
| 28 | JGL Racing | J.J. Yeley | Toyota |
| 29 | RAB Racing | Justin Marks | Toyota |
| 33 | Richard Childress Racing | Austin Dillon | Chevrolet |
| 39 | RSS Racing | Ryan Sieg | Chevrolet |
| 40 | MBM Motorsports / Garage 66 | Derek White | Dodge |
| 42 | HScott Motorsports | Kyle Larson | Chevrolet |
| 43 | Richard Petty Motorsports | Dakoda Armstrong | Ford |
| 44 | TriStar Motorsports | David Starr | Toyota |
| 51 | Jeremy Clements Racing | Jeremy Clements | Chevrolet |
| 52 | Jimmy Means Racing | Joey Gase | Chevrolet |
| 54 | Joe Gibbs Racing | Kyle Busch | Toyota |
| 55 | Viva Motorsports | Jeffrey Earnhardt | Chevrolet |
| 60 | Roush Fenway Racing | Chris Buescher | Ford |
| 62 | Richard Childress Racing | Brendan Gaughan | Chevrolet |
| 74 | Mike Harmon Racing | Mike Harmon | Dodge |
| 84 | Billy Boat Motorsports | Chad Boat | Chevrolet |
| 88 | JR Motorsports | Dale Earnhardt, Jr. | Chevrolet |
| 90 | DGM Racing | Mario Gosselin | Chevrolet |
| 92 | DGM Racing | Dexter Bean | Chevrolet |
| 97 | Obaika Racing | Josh Reaume | Chevrolet |
| 98 | Biagi DenBeste Racing | Aric Almirola | Ford |