2011–12 Serie D

The 2011–12 Serie D was the sixty-fourth edition of the top level Italian non-professional football championship. It represented the fifth tier in the Italian football league system. It consisted of 168 teams divided into six 18-team divisions and three 20-team divisions.

In the summer 2011 Montecchio Maggiore was readmitted in Serie D to the judgment of the High Court of Justice, that has transformed the score of Montebelluna-Este from 2–1 to 0–3, for infringement of the rule on under. And the last team admitted was Verbano, increasing the total number of teams to 168.

On December 15, 2011 Aquanera was excluded by the National Disciplinary Committee for irregularities at registration, reducing the total number of teams to 167. All matches played by the team have been annulled.

Each team played two matches against every other team in its own division; a total of 34 matches for the five groups of 18 teams, 36 matches for the group A of 19 teams and 38 matches for the groups B-D of 20 teams.