The 2005–06 Serie C2 was the football league season of Italian Serie C2 for the years 2005 and 2006. It was divided into two phases: the regular season, played from August 28, 2005 to May 7, 2006, and the playoff phase. Once the regular season was over teams placed 2nd to 5th entered a playoff to determine the second team in each division to be promoted to Serie C1. At the same time, teams placed 14th to 17th entered a playout for the right to remain in Serie C2 the following season. As usual, Serie C2 was composed by three divisions, whose teams were divided geographically. Division C2/A was mainly composed by Northern Italy and Sardinian teams, whereas division C2/B included North-Central and Central Italy teams, with the exception of two teams from Campania, and division C2/C was represented by teams hailing from Central-Southern Italy and Sicily. Teams finishing first in the regular season, plus one team winning the playoff round from each division were promoted to Serie C1; teams finishing last in the regular season, plus two relegation playoff losers from each division were relegated to Serie D, losing also their professional club status. In all, six teams were promoted to Serie C1, and nine teams were relegated to Serie D.
Teams
The season originally features 9 teams from Serie D, 6 teams from Serie C1 and 41 teams from last season Serie C2. However, COVISOC had expelled Calcio Como S.p.A., A.C. Imolese S.r.l., Polisportiva Rosetana Calcio S.r.l., A.S. Sora S.r.l., Vis Pesaro 1898 S.r.l. and Serie D Group B winner U.S. Canzese. Moreover, Monza, Chieti, Juve Stabia and San Marino Calcio were promoted to Serie C1 to fill the vacancies. The 10 vacancies was replaced by U.S. Città di Jesolo and Calcio Lecco 1912 from Serie D, as well as phoenix clubs that recreated by Lodo Petrucci: Andria, Benevento, Reggiana, SPAL and Venezia were relegated from 2005–06 Serie C1 to Serie C2, as well as on 19 AugustBiellese was readmitted from Serie D, which the team was relegated. Overall, the changes made the division had restored from 56 teams to 54 teams, or 18 teams in 3 groups, features 1 team from Serie B, 6 teams from Serie C1, 37 teams from Serie C2 and 10 teams from Serie D.
