The 2016–17 Serie D was the sixty-ninth edition of the top level Italian non-professional football championship.
It represents the fourth tier in the Italian football league system.
Scudetto winners: Monza The nine group winners are automatically promoted to Serie C. Teams placed between second and fifth in each group enter a playoff tournament after the regular season.
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 bottom three teams of each group are relegated into next year's Eccellenza (the highest tier in regional football in Italy), while teams placed 14th and 15th face each other in a single leg play-out (team places 14th playing home), the loser of the tie is relegated.