Serie B champions and promotions since its establishment, including the competition under previous names, are as follows:
| Season | Winners | Eventual other promotions | |
|---|---|---|---|
| Pro Patria, Reggiana, Lazio | |||
| Biellese, Pistoiese, Bari and Venezia, Fiumana, Triestina, Legnano, Prato, Fiorentina |
| Season | Winners | Runners-up | Third place | Eventual other promotions | |
|---|---|---|---|---|---|
| 1929–30 | Casale | Legnano | (La Dominante) | – | |
| 1930–31 | Fiorentina | Bari | (Palermo) | – | |
| 1931–32 | Palermo | Padova | (Hellas Verona) | – | |
| 1932–33 | Livorno | Brescia | (Modena) | – | |
| 1933–34 | Sampierdarenese | (Bari) | (Modena) | – | |
| 1934–35 | Genova 1893 | Bari | – | – | |
| 1935–36 | Lucchese | Novara | (Livorno) | – | |
| 1936–37 | Livorno | Atalanta | (Modena) | – | |
| 1937–38 | Modena | Novara | (Alessandria) | – | |
| 1938–39 | Fiorentina | Venezia | (Atalanta) | – | |
| 1939–40 | Atalanta | Livorno | (Lucchese) | – | |
| 1940–41 | Liguria | Modena | (Brescia) | – | |
| 1941–42 | Bari | Vicenza | (Pescara) | – | |
| 1942–43 | Modena | Brescia | (Napoli) | – | |
| 1945–46 | Alessandria | (Pro Patria) | (Vigevano) | Napoli | |
1946–47 | Northern winner | Central winner | Southern winner | – | |
| Pro Patria | Lucchese | Salernitana | |||
| 1947–48 | Novara | Padova | Palermo | – | |
| Winners | Runners-up | Third place | |||
| 1948–49 | Como | Venezia | (Vicenza) | – | |
| 1949–50 | Napoli | Udinese | (Legnano) | – | |
| 1950–51 | SPAL | Legnano | (Modena) | – | |
| 1951–52 | Roma | (Brescia) | (Messina) | – | |
| 1952–53 | Genoa | Legnano | (Catania) | – | |
| 1953–54 | Catania | Pro Patria | (Cagliari) | – | |
| 1954–55 | Lanerossi Vicenza | Padova | (Modena) | – | |
| 1955–56 | Udinese | Palermo | (Como) | – | |
| 1956–57 | Hellas Verona | Alessandria | (Brescia) | – | |
| 1957–58 | Triestina | Bari | (Venezia) | – | |
| 1958–59 | Atalanta | Palermo | (Lecco) | – | |
| 1959–60 | Torino | Lecco | Catania | – | |
| 1960–61 | Venezia | Ozo Mantova | Palermo | – | |
| 1961–62 | Genoa | Napoli | Modena | – | |
| 1962–63 | Messina | Bari | Lazio | – | |
| 1963–64 | Varese | Cagliari | Foggia | – | |
| 1964–65 | Brescia | Napoli | SPAL | – | |
| 1965–66 | Venezia | Lecco | Mantova | – | |
| 1966–67 | Sampdoria | Varese | (Catanzaro) | – | |
| 1967–68 | Palermo | Hellas Verona | Pisa | – | |
| 1968–69 | Lazio | Brescia | Bari | – | |
| 1969–70 | Varese | Foggia | Catania | – | |
| 1970–71 | Mantova | Atalanta | Catanzaro | – | |
| 1971–72 | Ternana | Lazio | Palermo | – | |
| 1972–73 | Genoa | Cesena | Foggia | – | |
| 1973–74 | Varese | Ascoli | Ternana | – | |
| 1974–75 | Perugia | Como | Hellas Verona | – | |
| 1975–76 | Genoa | Catanzaro | Foggia | – | |
| 1976–77 | Lanerossi Vicenza | Atalanta | Pescara | – | |
| 1977–78 | Ascoli | Catanzaro | Avellino | – | |
| 1978–79 | Udinese | Cagliari | Pescara | – | |
| 1979–80 | Como | Pistoiese | Brescia | – | |
| 1980–81 | Milan | Genoa | Cesena | – | |
| 1981–82 | Hellas Verona | Pisa | Sampdoria | – | |
| 1982–83 | Milan | Lazio | Catania | – | |
| 1983–84 | Atalanta | Como | Cremonese | – | |
| 1984–85 | Pisa | Lecce | Bari | – | |
| 1985–86 | Ascoli | Brescia | (Lanerossi Vicenza) | Empoli | |
| 1986–87 | Pescara[1] | Pisa[2] | Cesena | – | |
| 1987–88 | Bologna | Lecce | Lazio | Atalanta | |
| 1988–89 | Genoa | Bari | Udinese | Cremonese | |
| 1989–90 | Torino | Pisa | Cagliari | Parma | |
| 1990–91 | Foggia | Hellas Verona | Cremonese | Ascoli | |
| 1991–92 | Brescia | Pescara | Ancona | Udinese | |
| 1992–93 | Reggiana | Cremonese | Piacenza | Lecce | |
| 1993–94 | Fiorentina | Bari | Brescia | Padova | |
| 1994–95 | Piacenza | Udinese | Vicenza | Atalanta | |
| 1995–96 | Bologna | Hellas Verona | Perugia | Reggiana | |
| 1996–97 | Brescia | Empoli | Lecce | Bari | |
| 1997–98 | Salernitana | Venezia | Cagliari | Perugia | |
| 1998–99 | Hellas Verona | Torino | Reggina | Lecce | |
| 1999–2000 | Vicenza | Atalanta | Brescia | Napoli | |
| 2000–01 | Torino | Piacenza | Chievo | Venezia | |
| 2001–02 | Como | Modena | Reggina | Empoli | |
| 2002–03 | Siena | Sampdoria | Lecce | Ancona | |
| 2003–04 | Palermo | Cagliari | Livorno | Messina, Atalanta, Fiorentina | |
| 2004–05 | Empoli | (Torino) | (Perugia) | Treviso, Ascoli | |
| 2005–06 | Atalanta | Catania | Torino | – | |
| 2006–07 | Juventus | Napoli | Genoa | – | |
| 2007–08 | Bologna | Lecce | – | ||
| 2008–09 | Parma | Livorno | – | ||
| 2009–10 | Cesena | Brescia | – | ||
| 2010–11 | Atalanta | Siena | Novara | – | |
| 2011–12 | Pescara | Torino | (Sassuolo) | Sampdoria | |
| 2012–13 | Sassuolo | Hellas Verona | Livorno | – | |
| 2013–14 | Palermo | Empoli | (Latina) | Cesena | |
| 2014–15 | Carpi | Frosinone | (Vicenza) | Bologna | |
| 2015–16 | Cagliari | Crotone | (Trapani) | Pescara | |
| 2016–17 | SPAL | Hellas Verona | (Frosinone) | Benevento | |
| 2017–18 | Empoli | Parma | Frosinone | – | |
| 2018–19 | Brescia | Lecce | (Benevento) | Hellas Verona | |
| 2019–20 | Benevento | Crotone | Spezia | – | |
| 2020–21 | Empoli | Salernitana | (Monza) | Venezia | |
| 2021–22 | Lecce | Cremonese | (Pisa) | Monza | |
| 2022–23 | Frosinone | Genoa | (Bari) | Cagliari | |
| 2023–24 | Parma | Como | Venezia | – |