The 2008–09 Lega Pro Seconda Divisione season will be the thirty-first football (soccer) league season of Italian Lega Pro Seconda Divisione since its establishment in 1978, and the first since the renaming from Serie C2 to Lega Pro.
It will be divided into two phases: the regular season, played from September 2008 to May 2009, and the playoff phase from May to June 2009.
The will be composed of 54 teams divided into three divisions of 18 teams each, whose teams will be divided geographically. Teams will play only other teams in their own division, once at home and once away for a total of 34 matches each.
Teams finishing first in the regular season, plus one team winning the playoff round from each division will be promoted to Lega Pro Prima Divisione; teams finishing last in the regular season, plus two relegation playoff losers from each division will be relegated to Serie D. In all, six teams will be promoted to Lega Pro Prima Divisione, and nine teams will be relegated to Serie D.
The league was to feature six teams relegated from Serie C1 in 2007-08; Lecco, Manfredonia, Pro Patria, Lanciano, Martina, and Sangiovannese. Four vacancies were created with the re-admission of Pro Patria, Lanciano, and Lecco to Lega Pro Prima Divisione in 2008-09, and the non-admission of Martina.
It featured nine teams promoted from Serie D 2007-08; Alessandria, Aversa Normanna, Como, Figline, Fortitudo Cosenza, Giacomense, Isola Liri, Itala San Marco, and Sangiustese.