List of winners of the Scottish League One and predecessors
A national third tier of Scottish league football was first established in the 1923–24 season, as Division Three, it only lasted for two full seasons due to financial difficulties. There was again a third tier league in 1946–47 with the C Division, which also included reserve teams of the clubs from the divisions above. Division C operated as a national competition for the first three seasons thereafter it was split into two regional sections until season 1954–55 when the third tier was again abolished.
A third tier was reestablished in 1975–76 season, when a division known as the Second Division was set up. Its status within the Scottish football league system league system changed in season 1998–99 when clubs from the top tier (Premier Division) broke away from the Scottish Football League to form the Scottish Premier League. The Second Division was still the third tier of the Scottish league system, but became the second level of the Scottish Football League rather than the third. In 2013, the Scottish Premier League and Scottish Football League merged to form the Scottish Professional Football League, with the third tier becoming known as the Scottish League One.
Scottish Football League Division Three (1923–1926)
|1924–25||Nithsdale Wanderers||Queen of the South|
Scottish Football League Division C (1946–1955)
|1946–47||—||Stirling Albion||Dundee 'A'|
|1947–48||—||East Stirlingshire||East Fife 'A'|
|1948–49||—||Forfar Athletic||Leith Athletic|
|1949–50||South-East||Hibernian 'A'||Heart of Midlothian 'A'|
|South-West||Clyde 'A'||Rangers 'A'|
|1950–51||North-East||Heart of Midlothian 'A'||Aberdeen 'A'|
|South-West||Clyde 'A' (2)||Ayr United 'A'|
|1951–52||North-East||Dundee 'A'||Heart of Midlothian 'A'|
|South-West||Rangers 'A'||Morton 'A'|
|1952–53||North-East||Aberdeen 'A'||Hibernian 'A'|
|South-West||Rangers 'A' (2)||Partick Thistle 'A'|
|1953–54||North-East||Brechin City||Aberdeen 'A'|
|South-West||Rangers 'A' (3)||Partick Thistle 'A'|
|1954–55||North-East||Aberdeen 'A' (2)||Hibernian 'A'|
|South-West||Partick Thistle 'A'||Rangers 'A'|
Scottish Football League Second Division (1975–2013)
Scottish League One (2013–)
|2013–14||Rangers||Dunfermline Athletic||Michael Moffat (Ayr United)||26|
|2014–15||Greenock Morton||Stranraer||Declan McManus (Greenock Morton)||20|
|2015–16||Dunfermline Athletic (2)||Ayr United||Faissal El Bakhtaoui (Dunfermline Athletic)
Rory McAllister (Peterhead)
|2016–17||Livingston (4)||Alloa Athletic||Andy Ryan (Airdrieonians)||23|
|2017–18||Ayr United (3)||Raith Rovers||Lawrence Shankland (Ayr United)||26|
34 different clubs, including reserve teams as separate clubs, have won the third tier of Scottish football. Three clubs (Clyde, Partick Thistle and Rangers) have won the third tier with both their first team and their reserve team.
- As of 16:06, 28 April 2018 (UTC)
- Clubs participating in the 2018–19 Scottish League One are denoted in bold type.
- Clubs no longer active are denoted in italics.
|Greenock Morton[note 2]||3||1|
|Queen of the South||2||3|
|Heart of Midlothian 'A'||1||2|
|Partick Thistle 'A'||1||2|
|Airdrie United[note 3]||1||1|
|Ayr United 'A'||—||1|
|East Fife 'A'||—||1|
|Inverness Caledonian Thistle||—||1|
- note 1 Livingston were known as Meadowbank Thistle between 1974 and 1995
- note 2 Greenock Morton were known as Morton before 1994
- note 3 Airdrie United are now known as Airdrieonians
- "Scottish Football League Division Three Champions 1924–1926". RSSSF. Retrieved 9 April 2009.
- "Scottish Football League & Scottish Premier League Top goalscorers per division". Scottish Football History. Archived from the original on 23 September 2009. Retrieved 27 July 2009.