| Teams for 2021 NASCAR Xfinity Series Championship Race |
|---|
| Car | Team | Driver | Mfg |
|---|---|---|---|
| 0 | JD Motorsports | Jeffrey Earnhardt |  |
| 1 | JR Motorsports | Michael Annett | |
| 2 | Richard Childress | Myatt Snider | |
| 02 | Chris Our | Brett Moffitt | |
| 5 | BJ McLeod | Matt Mills | |
| 6 | JD Motorsports | Ryan Vargas | |
| 07 | SS Green Light Racing | JJ Yeley | |
| 7 | JR Motorsports | Justin Allgaier | |
| 8 | JR Motorsports | Sam Mayer | |
| 9 | JR Motorsports | Noah Gragson | |
| 10 | Kaulig Racing | Jeb Burton | |
| 11 | Kaulig Racing | Justin Haley | |
| 15 | JD Motorsports | Bayley Currey | |
| 16 | Kaulig Racing | AJ Allmendinger | |
| 17 | Rick Ware | Joe Graf, Jr. | |
| 18 | Joe Gibbs | Daniel Hemric |  |
| 19 | Joe Gibbs | Brandon Jones | |
| 20 | Joe Gibbs | Harrison Burton | |
| 22 | Roger Penske | Austin Cindric |  |
| 23 | Chris Our | Blaine Perkins | |
| 26 | Sam Hunt | Dylan Lupton | |
| 31 | Jordan Anderson Racing | Sage Karam | |
| 36 | DGM Racing | Alex Labbé | |
| 38 | RSS Racing | Ryan Sieg | |
| 39 | RSS Racing | Kyle Sieg | |
| 44 | Tommy Joe Martins | Tommy Joe Martins | |
| 47 | Mike Harmon Racing | Kyle Weatherman | |
| 48 | Scott Borchetta | Jade Buford | |
| 51 | Jeremy Clements Racing | Jeremy Clements | |
| 54 | Joe Gibbs | John H. Nemechek | |
| 66 | Motorsports Business Management | David Starr | |
| 68 | Brandonbilt Motorsports | Brandon Brown | |
| 78 | BJ McLeod | Sheldon Creed | |
| 92 | DGM Racing | Josh Williams | |
| 98 | Stewart Haas Racing | Riley Herbst | |
| 99 | BJ McLeod | Stefan Parsons | |
