| Teams 2020 O'Rielly Auto Parts 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 0 | JD Motorsports | Jeffrey Earnhardt | Chevrolet |
| 1 | JR Motorsports | Michael Annett | Chevrolet |
| 2 | Our Motorsports | Brett Moffitt | Chevrolet |
| 4 | JD Motorsports | Jesse Little | Chevrolet |
| 5 | BJ McLeod Motorsports | Matt Mills | Toyota |
| 6 | JD Motorsports | Ryan Vargas | Chevrolet |
| 07 | SS Green Light Racing | David Starr | Chevrolet |
| 07 | SS Green Light Racing | Joe Graf, Jr. | Chevrolet |
| 7 | JR Motorsports | Justin Allgaier | Chevrolet |
| 8 | JR Motorsports | Jeb Burton | Chevrolet |
| 9 | JR Motorsports | Noah Gragson | Chevrolet |
| 10 | Kaulig Racing | Ross Chastain | Chevrolet |
| 11 | Kaulig Racing | Justin Haley | Chevrolet |
| 13 | MBM Motorsports / Garage 66 | Timmy Hill | Toyota |
| 15 | JD Motorsports | Colby Howard | Chevrolet |
| 18 | Joe Gibbs Racing | Riley Herbst | Toyota |
| 19 | Joe Gibbs Racing | Brandon Jones | Toyota |
| 20 | Joe Gibbs Racing | Harrison Burton | Toyota |
| 21 | Richard Childress Racing | Anthony Alfredo | Chevrolet |
| 22 | Team Penske | Austin Cindric | Ford |
| 36 | DGM Racing | Alex Labbé | Chevrolet |
| 39 | RSS Racing | Ryan Sieg | Chevrolet |
| 44 | Alpha Prime Motorsports | Tommy Joe Martins | Chevrolet |
| 47 | Mike Harmon Racing | Kyle Weatherman | Chevrolet |
| 51 | Jeremy Clements Racing | Jeremy Clements | Chevrolet |
| 52 | Jimmy Means Racing | Kody Vanderwal | Chevrolet |
| 61 | Hattori Racing Enterprises | Austin Hill | Toyota |
| 66 | MBM Motorsports / Garage 66 | Chad Finchum | Toyota |
| 68 | Brandonbilt Motorsports | Brandon Brown | Chevrolet |
| 74 | Mike Harmon Racing | Bayley Currey | Chevrolet |
| 78 | BJ McLeod Motorsports | CJ McLaughlin | Toyota |
| 90 | DGM Racing | B.J. Mcleod | Chevrolet |
| 92 | DGM Racing | Josh Williams | Chevrolet |
| 93 | RSS Racing | Myatt Snider | Chevrolet |
| 98 | Stewart Haas Racing | Chase Briscoe | Ford |
| 99 | BJ McLeod Motorsports | Jesse Iwuji | Chevrolet |