The 2014–15 Serie B was the 83rd season since its establishment in 1929. A total of 22 teams contested the league: 14 of which returning from the 2013–14 season, 5 of which promoted from Prima Divisione, and three relegated from Serie A. The original concept was that due to Siena's exclusion because of financial issues and the fact such vacancy will not be filled in preparation of a future reduction to a league composed by 20 teams, this season featured 21 participant clubs instead of the usual 22. However, on 11 August 2014, Novara won an appeal and the league confirmed a 22nd team. On 29 August, the league chose Vicenza Calcio as the 22nd participant.