This is the complete list of the clubs that took part in the 38 Serie C seasons played from the 1935–36 season until the 1977–78 season (participation in the editions of the 1945–46, 1946–47 and 1947–48 seasons, championships that due to World War II, are excluded from the list as they were divided into two completely independent leagues), the three Lega Pro seasons played from the 2014–15 season until the 2016–17 season, and from the 2017–18 season. The teams in bold compete in Serie C in the current season.