2017–18 Serie B
The 2017–18 Serie B was the 86th season since its establishment in 1929.
A total of 22 teams contested the league: 15 returning from the 2016–17 Serie B season, 4 promoted from 2016–17 Lega Pro, and 3 relegated from 2016–17 Serie A.
Teams
Stadia and locations
League table
On August 13, 2018, the FIGC decided to reduce the chronic financial instability of the league halting re-elections of clubs. Serie B was so reduced to 19 clubs.Promotion play-offs
Six teams could contest the promotion play-offs depending on the point differential between the third and fourth-placed teams. It began with a preliminary one-legged round played at the home venue of the higher placed team, involving the teams placed fifth to eight. The two winning teams advanced to play the third and fourth-placed teams in the two-legged semi-finals. Those winning teams advanced to the two-legged final, where the winner was promoted to play in Serie A the following season. In the two-legged rounds, the higher seeded team played the second game at home.Relegation play-out
Two teams contested the relegation play-out in a two-legged round. The higher placed team played the second leg at home. In the case of a tie on aggregate, the higher placed team from the regular season were declared the winners. The losers were relegated to Serie C for the following season.Attendances
| No. | Club | Average | Highest |
| 1 | Bari | 15,800 | 33,567 |
| 2 | Cesena | 12,106 | 16,234 |
| 3 | Parma | 11,385 | 14,820 |
| 4 | Foggia | 10,533 | 14,343 |
| 5 | Frosinone | 10,299 | 16,286 |
| 6 | Palermo | 9,029 | 23,207 |
| 7 | Salernitana | 8,721 | 16,813 |
| 8 | Perugia | 8,670 | 13,696 |
| 9 | Pescara | 7,571 | 12,672 |
| 10 | Cremonese | 7,206 | 10,958 |
| 11 | Brescia | 6,863 | 8,670 |
| 12 | Spezia | 5,639 | 8,270 |
| 13 | Ascoli | 5,371 | 8,764 |
| 14 | Empoli | 4,914 | 9,132 |
| 15 | Ternana | 4,769 | 9,509 |
| 16 | Avellino | 4,421 | 10,000 |
| 17 | Venezia | 4,199 | 5,944 |
| 18 | Novara | 4,044 | 5,735 |
| 19 | Cittadella | 3,537 | 5,099 |
| 20 | Pro Vercelli | 2,754 | 4,446 |
| 21 | Carpi | 2,181 | 3,487 |
| 22 | Virtus Entella | 2,109 | 3,589 |
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