| Competition: | Serie B |
| Season: | 2012–13 |
| Winners: | Sassuolo (1st title) |
| Promoted: | Sassuolo Hellas Verona Livorno (by Play-off) |
| Relegated: | Vicenza Ascoli Pro Vercelli Grosseto |
| League Topscorer: | Daniele Cacia (24 goals) |
| Biggest Home Win: | Brescia 5–0 Crotone Sassuolo 5–0 Cesena |
| Biggest Away Win: | Spezia 0–6 Novara |
| Highest Scoring: | Cittadella 2–6 Novara |
| Longest Wins: | 5 games Livorno Sassuolo |
| Longest Unbeaten: | 12 games Livorno |
| Longest Winless: | 9 games Empoli Spezia |
| Longest Losses: | 6 games Novara |
| Matches: | 451 |
| Total Goals: | 1149 |
| Prevseason: | 2011–12 |
| Nextseason: | 2013–14 |
The 2012–13 Serie B (known as the Serie bwin for sponsorship reasons) is the 81st season since its establishment in 1929. A total of 22 teams will contest the league: 16 of which returning from the 2011–12 season, 4 of which promoted from Lega Pro Prima Divisione, and two relegated from Serie A. Puma replaced Nike as manufacturer of the official Serie B match ball, a relationship that continues today.
The league featured two clubs relegated from Serie A: Novara returned to the second division after only a single season in the top flight, whereas Cesena were relegated after a two-year stint.
Four teams were promoted from Lega Pro Prima Divisione, one of them returning to Serie B after a significant absence and one of them will play Serie B for the first time in their history, Pro Vercelli after 64 years, Ternana after 6 years, while Spezia will take part to Serie B after 4 years. The fourth promoted team, Virtus Lanciano will make debut in Serie B.
Grosseto and Lecce were provisionally, not yet enforceable, condemned to relegation to Lega Pro Prima Divisione, due to a large match fixing scandal involving Italian football; both clubs appealed the decision to the Italian Football Federation's Court of Justice. In appeal, Grosseto was acquitted from all charges and readmitted to Serie B, whereas Lecce's relegation was confirmed. Lecce already announced its intention to appeal the decision at the TNAS (National Sports Arbitration Court, at the Italian Olympic Committee level), but not blocking the relegation being immediately enforceable.[1] On 23 August 2012, FIGC officially communicated that Vicenza were to replace Lecce, and there has been a possibility of extending the transfer window as regards Grosseto and Vicenza.[2]
| Team | President | Manager | Kit manufacturer | Shirt sponsor | |
|---|---|---|---|---|---|
| Ascoli |  Roberto Benigni | Massimo Silva | Max Sport | Carisap, CIAM | |
| Bari | Francesco Vinella | Vincenzo Torrente | Erreà | Fashion District | |
| Brescia | Gino Corioni | Alessandro Calori | Givova | UBI Banco di Brescia, SAMA | |
| Cesena | Igor Campedelli | Pierpaolo Bisoli | Adidas | Technogym | |
| Cittadella | Andrea Gabrielli | Claudio Foscarini | Garman | Siderurgica Gabrielli, Metalservice | |
| Crotone | Raffaele Vrenna | Massimo Drago | Zeus | Sovreco, Associazione Italiana Sclerosi Multipla | |
| Empoli | Fabrizio Corsi | Maurizio Sarri | Royal | NGM Mobile, Computer Gross | |
| Grosseto | Piero Camilli | Francesco Moriero | Erreà | Industria Lavorazione Carni Ovine, Banca della Maremma | |
| Hellas Verona | Maurizio Setti | Andrea Mandorlini | Asics | agsm/Leaderform, E-gò/Velox Servizi | |
| Juve Stabia | Francesco Giglio | Piero Braglia | Fly Line | Paddy Power, Marigo | |
| Livorno | Aldo Spinelli | Davide Nicola | Legea | Banca Carige | |
| Modena | Pierluigi Grana | Walter Novellino | Givova | CPL Concordia, CoopGas | |
| Novara | Carlo Accornero | Alfredo Aglietti | Joma | Banca Popolare di Novara, Intesa pour Homme | |
| Padova | Marcello Cestaro | Franco Colomba | Joma | Famila | |
| Pro Vercelli | Massimo Secondo | Maurizio Braghin | Erreà | Gruppo Biancamano/Senior Service, Riso Viazzo | |
| Reggina | Lillo Foti | Giuseppe Pillon | Givova | Ciao Telecom, Stocco & Stocco | |
| Sassuolo | Carlo Rossi | Eusebio Di Francesco | Sportika | Mapei | |
| Spezia | Matteo Volpi | Luigi Cagni | Lotto | Carispezia, Gruppo Ferla | |
| Ternana | Edoardo Longarini | Domenico Toscano | Macron | None | |
| Varese | Antonio Rosati | Andrea Agostinelli | Adidas | Oro in Euro, Fatigati | |
| Vicenza | Tiziano Cunico | Alessandro Dal Canto | Macron | Banca Popolare di Vicenza | |
| Virtus Lanciano | Valentina Maio | Carmine Gautieri | Legea | Gruppo Maio, Banca Popolare di Lanciano e Sulmona |
| Team | Outgoing manager | Manner of departure | Date of vacancy | Position in table | Replaced by | Date of appointment | |
|---|---|---|---|---|---|---|---|
| End of contract | Before the start of the season | [3] | |||||
| End of contract | [4] | ||||||
| End of contract | [5] | ||||||
| [6] | |||||||
| End of contract | [7] | ||||||
| End of contract | [8] | ||||||
| End of contract | [9] | ||||||
| End of caretaker spell | [10] | ||||||
| Sacked | 10 September 2012[11] | 21st | 11 September 2012 | ||||
| Sacked | 1 October 2012[12] | 20th | 1 October 2012 | ||||
| Sacked | 15 October 2012[13] | 18th | 15 October 2012 | ||||
| Sacked | 31 October 2012[14] | 20th | 31 October 2012 | ||||
| Sacked | 18 November 2012[15] | 21st | 18 November 2012 | ||||
| Sacked | 18 November 2012[16] | 22nd | 19 November 2012[17] | ||||
| Sacked | [18] | 5th | |||||
| Sacked | 18 December 2012[19] | 22nd | |||||
| Sacked | 3 January 2013[20] | 21st | 3 January 2013 | ||||
| Sacked | 4 January 2013[21] | 12th | 4 January 2013 | ||||
| Sacked | 28 January 2013[22] | 20th | 28 January 2013 | ||||
| Sacked | 10 February 2013[23] | 22nd | 11 February 2013[24] | ||||
| Sacked | 23 February 2013[25] | 13th | 23 February 2013 | ||||
| Sacked | 20 March 2013[26] | 16th | 20 March 2013 | ||||
| Sacked | 20 March 2013[27] | 12th | 20 March 2013 | ||||
| Sacked | 20 March 2013[28] | 8th | 20 March 2013 | ||||
| Sacked | 13 April 2013[29] | 19th | 13 April 2013 | ||||
| Sacked | 17 April 2013[30] | 7th | 17 April 2013 |
The higher placed team plays the second leg of the promotion playoff at home. If scores are tied after both games in the semifinals the higher placed team progresses to the final. The same conditions apply to the final except for there being extra time played if scores are tied after both games, the higher placed team will be promoted if scores are still level at the end of this period.
As of 13 May 2013.