| Season: | 2005–06 |
| Winners: | Rilski Sportist (West) Spartak Varna (East) |
| Matches: | 364 |
| Total Goals: | 900 |
| Nextseason: | 2006–07 |
The 2005–06 B Group was the 50th season of the Bulgarian B Football Group, the second tier of the Bulgarian football league system.[1] The season started on 13 August 2005 and finished on 7 June 2006 with the A Group promotion play-off between the runners-up from both divisions.