The 2012–13 Lega Pro Seconda Divisione season will be the thirty-fifth football league season of Italian Lega Pro Seconda Divisione since its establishment in 1978, and the fifth since the renaming from Serie C to Lega Pro.It will be divided into two phases: the regular season, and the playoff phase.The league currently would be composed of 36 teams divided into two divisions (Girone A and B) divided geographically, with the exception of the Sicilian team Milazzo that plays in group A, each composed of 18 teams.Teams finishing first and second in the regular season, plus one team winning the playoff round from each division will be promoted to Lega Pro Prima Divisione.