Serie B
| Organising body | Lega B |
|---|---|
| Founded | 1929 (pilot in 1922) |
| Country | Italy |
| Confederation | UEFA |
| Number of clubs | 20 |
| Level on pyramid | 2 |
| Promotion to | Serie A |
| Relegation to | Serie C |
| Domestic cup(s) | Coppa Italia |
| Current champions | Sassuolo (2nd title) (2024–25) |
| Most championships | Genoa (6 titles) |
| Most appearances | Luigi Cagni (483) |
| Top goalscorer | Stefan Schwoch (135) Massimo Coda (135) |
| Broadcaster(s) | LaB Channel DAZN |
| Website | legab.it |
| Current: 2024–25 Serie B | |
The Serie B (Italian pronunciation: [ˈsɛːrje ˈbi]), officially known as Serie BKT for sponsorship reasons, is the second-highest division in the Italian football league system after the Serie A. It has been operating for over ninety years since the 1929–30 season. It had been organized by Lega Calcio until 2010 and the Lega B ever since. Common nicknames for the league are campionato cadetto and cadetteria, since cadetto is the Italian name for junior or cadet.