| Competition: | Serie B |
| Season: | 1986–87 |
| Winners: | Pescara Pisa shared title |
| Prevseason: | 1985–86 |
| Nextseason: | 1987–88 |
The Serie B 1986–87 was the fifty-fifth tournament of this competition played in Italy since its creation.
Parma, Modena, Messina and Taranto had been promoted from Serie C, while Pisa, Bari and Lecce had been relegated from Serie A.
Tiebreakers were restored in relegation zone.
Played in San Benedetto del Tronto on July 8
Campobasso relegated to Serie C1.