| Teams 1968 Maryland 300 |
|---|
| No. | Team | Driver | Mfg |
|---|---|---|---|
| 2 | Donald Brackens | Bobby Allison | Chevrolet |
| 4 | DeWitt Racing | John Sears | Ford |
| 5 | Robertson Racing | Earl Brooks | Ford |
| 6 | Castle Racing | Neil Castles | Plymouth |
| 7 | George Davis | George Davis | Chevrolet |
| 9 | Roy Tyner | Roy Tyner | Pontiac |
| 10 | Champion Racing | Bill Champion | Ford |
| 19 | Henley Gray Racing | Cecil Gordon | Ford |
| 20 | Clyde Lynn | Clyde Lynn | Ford |
| 21 | Wood Brothers Racing | Cale Yarborough | Mercury |
| 25 | Robertson Racing | Jabe Thomas | Ford |
| 34 | Scott Racing | Wendell Scott | Ford |
| 43 | Petty Enterprises | Richard Petty | Plymouth |
| 45 | Siefert Racing | Elmo Langley | Ford |
| 48 | Hylton Engineering | James Hylton | Dodge |
| 49 | GC Spencer Racing | G.C. Spencer | Plymouth |
| 51 | Margo Hamm | Stan Meserve | Dodge |
| 64 | Elmo Langley & Henry Woodfield | Bill Seifert | Ford |
| 70 | McDuffie Racing | J.D. McDuffie | Buick |
| 71 | K&K Racing | Bobby Isaac | Dodge |
| 83 | Allen McMillion | G.T. Nolan | Pontiac |
| 84 | Roy Trantham | David Pearson | Ford |
| 95 | Henley Gray Racing | Paul Dean Holt | Ford |