| Competition: | Serie D |
| Season: | 2021–22 |
| Dates: | Regular season: 18 September 2021 – 15 May 2022 |
| Winners: | Recanatese (1st title) |
| Promoted: | Novara Sangiuliano City Nova Arzignano Rimini San Donato Tavarnelle Recanatese Giugliano Audace Cerignola Gelbison Torres |
| Relegated: | RG Ticino Imperia Lavagnese Saluzzo Caravaggio Brianza Olginatese Vis Nova Giussano Leon Ambrosiana Spinea Cattolica San Martino Speme Sasso Marconi Progresso Borgo San Donnino Tritium Foligno UniPomezia Cannara Pro Livorno Castelfidardo Castelnuovo Vomano Nereto Aurora Alto Casertano Carbonia Insieme Formia Lanusei Latte Dolce Rotonda San Giorgio Bisceglie Virtus Matino Rende Troina Biancavilla FC Messina (excluded) |
| Prevseason: | 2020–21 |
| Nextseason: | 2022–23 |
The 2021–22 Serie D was the seventy-third season of the top level Italian non-professional football championship. It represents the fourth tier in the Italian football league system.
The season will provide a total nine promotions to Serie C (those being the winners of all nine groups). Teams placed between second and fifth for each group will play a so-called "playoff tournament", starting with two one-legged games played at the best placed team's home venue:
In case of a draw by the end of the game, two extra times will be played; in case of no winner after that, the best-placed team will advance to the final.
The two winning teams will then play a one-legged final, to be hosted at the best placed team's home venue, with the same rules as in the first round. The nine playoff winners for each group will be prioritised to fill any potential Serie C league vacancies.[1]
The two bottom-placed teams for each league group are automatically relegated to Eccellenza. Two two-legged relegation playoff games (known in Italian as "play-out") will therefore be played between:
In case of an aggregate draw after the second leg, two extra times will be played; in case of further aggregate draw, the worst-placed team will be relegated.
In case the two teams will have a league gap of at least eight points, the relegation playoff will not take place and the worst-placed team will be automatically relegated instead.[2]
The composition of the league involves nine divisions, grouped geographically and named alphabetically.
Five teams were directly relegated from the 2020–21 Serie C: Fano, Ravenna, Arezzo, Bisceglie, Cavese.
Novara were admitted via Article 52 of N.O.I.F.
Casertana and Sambenedettese, originally excluded from Serie C, were later readmitted to Serie D by sentence of the Regional Administrative Court of Lazio.
The following teams were promoted from Eccellenza:[3]
On 15 December 2021, debt-ridden FC Messina was excluded from the league with immediate effect due to having failed to show up for two consecutive league games; as the exclusion happened before mid-season, all previous games involving the club were voided.[4]
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