2009–10 Lega Pro Prima Divisione
The 2009–10 Lega Pro Prima Divisione season was the thirty-second football league season of Italian Lega Pro Prima Divisione since its establishment in 1978, and the second since the renaming from Serie C to Lega Pro.
It was divided into two phases: the regular season, played from 23 August 2009 to May 2010, and the playoff phase from May to June 2010.
The league was contested by 36 teams, geographically divided into two divisions of 18 teams each. Teams only played 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 were promoted to Serie B; teams finishing last in the regular season, plus two relegation playoff losers from each division were relegated to Lega Pro Seconda Divisione. Four teams were thus promoted to Serie B and six teams were relegated to Lega Pro Seconda Divisione.