The 2013–14 Serie D was the sixty-sixth edition of the top level Italian non-professional football championship.
It represented the fifth tier in the Italian football league system.
It consisted of 161 teams, after the exclusion of Nardò and including the retired Ragusa and Bojano.
The nine division winners are automatically promoted to the new 2014–15 Serie C. Teams placed second through fifth in each division enter a playoff tournament, after the regular season, where the nine winners will compete among themselves with the best semifinalist and the finalist of Coppa Italia Serie D to determine three of the four semi-finalists.
Scudetto Winner: Pordenone Promotion playoffs involved a total of 33 teams; four from Serie D divisions A-B-H (teams placed from 2nd through to 5th) and three from divisions C-G and I (teams placed 2nd to 4th), with the best semifinalist, the finalist and the winner of Coppa Italia Serie D that are directly respectively admitted to the third, fourth round and the Semi-final.