The 2015–16 Serie D was the sixty-eighth edition of the top level Italian non-professional football championship.
It represents the fourth tier in the Italian football league system.
Teams, placed between second and fifth in each division, enter a playoff tournament after the regular season along with the Coppa Italia Serie D winner, runners-up and best semi-finalist.
The tournament provides a priority list for entry into the next year Lega Pro in the case any of the professional teams fail to meet the minimum criteria to participate.
The nine division winners enter a tournament which determines the overall Serie D champions and the winner is awarded the Scudetto Serie D. Teams from Piedmont, Liguria and Lombardy