1990–91 B Group
| Season | 1990–91 |
|---|---|
| Champions | Hebar |
| Promoted | Hebar Dobrudzha |
| Relegated | Bdin Akademik Sofia Pirin Razlog |
| Matches played | 342 |
| Goals scored | 873 (2.55 per match) |
| Top goalscorer | Stoyan Dimov (25 goals) |
← 1989–90 1991–92 → | |
The 1990–91 B Group was the 35th season of the Bulgarian B Football Group, the second tier of the Bulgarian football league system. A total of 19 teams contested the league.
Hebar Pazardzhik sealed an instant return to the A Group by sealing the B Group title. Dobrudzha Dobrich returned to the elite after twenty-two seasons away as runners-up.