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| Organising body | Lega Nazionale Dilettanti |
|---|---|
| Founded | 1948 as Promozione 1981 as Campionato Interregionale |
| Country | Italy |
| Other club(s) from | San Marino |
| Confederation | UEFA |
| Divisions | 9 |
| Number of teams | 166 |
| Level on pyramid | 5 (1959–2014) 4 (2014–) |
| Promotion to | Serie C |
| Relegation to | Eccellenza |
| League cup(s) | Coppa Italia Serie D |
| Current champions | Campobasso (1st title) (2023–24) |
| Most championships | Siena (2 titles) |
| TV partners | Rai Sport Sportitalia |
| Website | seried.lnd.it |
| Current: 2024–25 Serie D | |
The Serie D (Italian pronunciation: [ˈsɛːrje ˈdi]) is the highest level of semi-professional football in Italy. The fourth tier of the Italian league system, the competition sits beneath the third professional league, Serie C. It is administered by the Lega Nazionale Dilettanti and is organized by the Roman Comitato Interregionale (Interregional Committee), a "league in the league" inside the LND.