| Competition: | Serie B |
| Winners: | Empoli (2nd title) |
| Promoted: | Empoli Parma Frosinone (by play-off) |
| Relegated: | Virtus Entella Novara Pro Vercelli Ternana Bari (bankruptcy) Cesena (bankruptcy) Avellino (bankruptcy) |
| Matches: | 462 |
| Total Goals: | 1182 |
| League Topscorer: | Francesco Caputo (26 goals) |
| Biggest Home Win: | Perugia 5–0 Carpi (18 November 2017) |
| Biggest Away Win: | Virtus Entella 1–5 Perugia (27 August 2017) Perugia 1–5 Pro Vercelli (8 October 2017) Bari 0-4 Empoli (27 January 2018) Cremonese 0-4 Foggia (7 April 2018) |
| Highest Scoring: | Empoli 5–3 Cesena (18 November 2017) |
| Longest Wins: | 6 games Empoli |
| Longest Unbeaten: | 28 games Empoli |
| Longest Winless: | 18 games Cremonese |
| Longest Losses: | 5 games Perugia Ternana |
| Highest Attendance: | 33,567 Bari 1–0 Foggia (26 November 2017) |
| Lowest Attendance: | 912 Frosinone 2–1 Cittadella (4 September 2017) (Match played in Avellino) |
| Attendance: | 3,194,526 |
| Average Attendance: | 6,930[1] |
| Prevseason: | 2016–17 |
| Nextseason: | 2018–19 |
| Season: | 2017–18 |
The 2017–18 Serie B (known as the Serie B ConTe.it for sponsorship reasons) 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 (Cremonese, Venezia, Foggia, Parma), and 3 relegated from 2016–17 Serie A (Empoli, Palermo, Pescara).
| Team | President | Manager | Kit manufacturer | Shirt sponsor (front) | Shirt sponsor (back) | Shorts sponsor | |
|---|---|---|---|---|---|---|---|
| Ascoli |  Francesco Bellini | Nike | CIAM/Fainplast | Brosway | None | ||
| Avellino |  Walter Taccone | Claudio Foscarini | Givova | Sidigas | None | None | |
| Bari | Cosmo Antonio Giancaspro | Fabio Grosso | Zeus | Peroni 3.5, Piné Cembra | Password/Primiceri SpA | None | |
| Brescia | Alessandro Triboldi | Ivo Pulga | Acerbis | UBI Banca[3] | OMR | None | |
| Carpi | Claudio Caliumi | Antonio Calabro | Givova | Gaudì Jeans | Braglia Costruzioni | None | |
| Cesena | Giorgio Lugaresi | Fabrizio Castori | Lotto | PLT Puregreen | None | None | |
| Cittadella | Andrea Gabrielli | Roberto Venturato | Boxeur Des Rues | OCSA, Gruppo Gabrielli | Metalservice | Veneta Nastri | |
| Cremonese | Luigi Simoni | Andrea Mandorlini | Garman | Ilta Inox (H)/Arinox (A), Università di Pavia | None | None | |
| Empoli | Fabrizio Corsi | Aurelio Andreazzoli | Joma | Gensan, Sammontana (H)/Logli Massimo (A) | Giletti | PSB Advisory | |
| Foggia | Lucio Fares | Giovanni Stroppa | Nike | Pasta Tamma, Wüber | Metaurobus | Valvoline | |
| Frosinone | Maurizio Stirpe | Moreno Longo | Legea | Banca Popolare del Frusinate, MBI Gas & Luce | 7Sette Carburanti | Acqua Filette | |
| Novara | Carlo Accornero | Domenico Di Carlo | Joma | Banca Popolare di Novara, Gruppo Comoli Ferrari | Gorgonzola Igor | Intesa pour Homme | |
| Palermo | Maurizio Zamparini | Roberto Stellone | Legea | Sicily by Car | Bisaten | None | |
| Parma |  Jiang Lizhang | Roberto D'Aversa | Erreà | Cetilar, Aon | Viva la Mamma Beretta | Colser | |
| Perugia | Massimiliano Santopadre | Roberto Breda | Frankie Garage | Officine Piccini, Fortinfissi | Tedesco Group | Mericat | |
| Pescara | Daniele Sebastiani | Giuseppe Pillon | Erreà | Saquella Caffè, Lilofilchem | Sarni Ristorazione (H)/Sarnioro (A) | Vincenzo Serraiocco Consulting | |
| Pro Vercelli | Massimo Secondo | Gianluca Grassadonia | Erreà | PGO Group (H)/MediatechShop (A) | None | None | |
| Salernitana | Marco Mezzaroma & Claudio Lotito | Stefano Colantuono | Givova | Sèleco Home | Sèleco Easy Life | None | |
| Spezia | Andrea Corradino | Fabio Gallo | Acerbis | Arquati, Carispezia | None | Gelateria Vernazza | |
| Ternana | Stefano Bandecchi | Luigi De Canio | Zeus | Unicusano | None | None | |
| Venezia |  Joe Tacopina | Filippo Inzaghi | Nike | Lino Sonego | None | Estra | |
| Virtus Entella | Antonio Gozzi | Alfredo Aglietti | Acerbis | Duferco Energia | Pensa Benessere | None |
| Team | Outgoing manager | Manner of departure | Date of vacancy | Position in table | Replaced by | Date of appointment |
|---|---|---|---|---|---|---|
| Ascoli | Alfredo Aglietti | End of contract | 1 June 2017 | Pre-season | Fulvio Fiorin & Enzo Maresca | 1 June 2017[4] [5] |
| Bari | Stefano Colantuono | End of contract | 13 June 2017 | Fabio Grosso[6] | 13 June 2017 | |
| Brescia | Luigi Cagni | End of contract | 3 June 2017 | Roberto Boscaglia | 3 June 2017[7] | |
| Carpi | Fabrizio Castori[8] | Mutual consent | 12 June 2017 | Antonio Calabro[9] | 14 July 2017 | |
| Frosinone | Pasquale Marino[10] | Mutual consent | 14 June 2017 | Moreno Longo[11] | 14 June 2017 | |
| Novara | Roberto Boscaglia | Signed by Brescia | 3 June 2017 | Eugenio Corini[12] | 14 June 2017 | |
| Pro Vercelli | Moreno Longo[13] | Signed by Frosinone | 14 June 2017 | Gianluca Grassadonia[14] | 14 June 2017 | |
| Spezia | Domenico Di Carlo[15] | End of contract | 14 June 2017 | Fabio Gallo[16] | 14 June 2017 | |
| Perugia | Cristian Bucchi[17] | Signed by Sassuolo | 20 June 2017 | Federico Giunti[18] | 23 June 2017 | |
| Empoli | Giovanni Martusciello | Mutual consent | 20 June 2017 | Vincenzo Vivarini[19] | 21 June 2017 | |
| Palermo | Diego Bortoluzzi | End of contract | 21 June 2017 | Bruno Tedino[20] | 22 June 2017 | |
| Ternana | Fabio Liverani | End of contract | 30 June 2017 | Sandro Pochesci[21] | 9 July 2017 | |
| Cesena | Andrea Camplone[22] | Sacked | 30 September 2017 | 22nd | Fabrizio Castori[23] | 1 October 2017 |
| Brescia | Roberto Boscaglia[24] | 12 October 2017 | 15th | Pasquale Marino | 12 October 2017 | |
| Perugia | Federico Giunti | 24 October 2017 | 15th | Roberto Breda | 26 October 2017 | |
| V. Entella | Gianpaolo Castorina | 5 November 2017 | 19th | Alfredo Aglietti[25] | 6 November 2017 | |
| Ascoli | Fulvio Fiorin | 7 December 2017 | 22nd | Serse Cosmi[26] | 7 December 2017 | |
| Salernitana | Alberto Bollini | 11 December 2017 | 11th | Stefano Colantuono[27] | 12 December 2017 | |
| Empoli | Vincenzo Vivarini | 16 December 2017 | 5th | Aurelio Andreazzoli[28] | 17 December 2017 | |
| Pro Vercelli | Gianluca Grassadonia | 16 December 2017 | 20th | Gianluca Atzori | 17 December 2017 | |
| Brescia | Pasquale Marino[29] | 15 January 2018 | 17th | Roberto Boscaglia | 15 January 2018 | |
| Pro Vercelli | Gianluca Atzori[30] | 22 January 2018 | 22nd | Gianluca Grassadonia | 22 January 2018 | |
| Ternana | Sandro Pochesci[31] | 29 January 2018 | 20th | Ferruccio Mariani[32] | 30 January 2018 | |
| Novara | Eugenio Corini[33] | 4 February 2018 | 16th | Domenico Di Carlo[34] | 5 February 2018 | |
| Ternana | Ferruccio Mariani[35] | 21 February 2018 | 22nd | Luigi De Canio | 21 February 2018 | |
| Pescara |  Zdeněk Zeman[36] | 6 March 2018 | 13th | Massimo Epifani | 6 March 2018 | |
| Massimo Epifani[37] | 1 April 2018 | 16th | Giuseppe Pillon | 1 April 2018 | ||
| Avellino | Walter Novellino[38] | 3 April 2018 | 18th | Claudio Foscarini[39] | 3 April 2018 | |
| Cremonese | Attilio Tesser[40] | 23 April 2018 | 14th | Andrea Mandorlini | 23 April 2018 | |
| Palermo | Bruno Tedino[41] | 28 April 2018 | 3rd | Roberto Stellone | 28 April 2018 | |
| Brescia | Roberto Boscaglia[42] | 29 April 2018 | 13th | Ivo Pulga | 29 April 2018 | |
| Virtus Entella | Alfredo Aglietti[43] | 6 May 2018 | 20th | Gennaro Volpe | 6 May 2018 | |
| Pro Vercelli | Gianluca Grassadonia | 7 May 2018 | 22nd | Vito Grieco[44] | 7 May 2018 |
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.
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 (or higher placed team from regular season if a match ended with a draw) 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.
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.
| Rank | Player | Club | Goals[45] | ||
|---|---|---|---|---|---|
| 1 | align=left | Francesco Caputo | align=left | Empoli | 26 |
| 2 | Alfredo Donnarumma | Empoli | 23 | ||
| 3 | Samuel Di Carmine | Perugia | 22 | ||
| 4 | Adriano Montalto | Ternana | 20 | ||
| 5 | align=left | Fabio Mazzeo | align=left | Foggia | 19 |
| 6 | align=left | Alberto Cerri | align=left | Perugia | 15 |
| 7 | align=left | Camillo Ciano | align=left | Frosinone | 14 |
| align=left | Cristian Galano | align=left | Bari | ||
| 9 | Emanuele Calaiò | Parma | 13 | ||
| Andrea Caracciolo | Brescia | ||||
| Daniel Ciofani | Frosinone | ||||
| align=left | Ilija Nestorovski | align=left | Palermo | ||
| align=left | Stefano Pettinari | align=left | Pescara | ||