Champions of the EFL League One
Includes predecessor leagues.
1920-1921
| Season | Winner | Runner-up (not promoted) |
|---|---|---|
| 1920–21 | Crystal Palace | Southampton |
1921-1958
| Season | North | South | ||
|---|---|---|---|---|
| Winner | Runner-up (not promoted) | Winner | Runner-up (not promoted) | |
| 1921–22 | Stockport County | Darlington | Southampton | Plymouth Argyle |
| 1922–23 | Nelson | Bradford Park Avenue | Bristol City | Plymouth Argyle |
| 1923–24 | Wolverhampton Wanderers | Rochdale | Portsmouth | Plymouth Argyle |
| 1924–25 | Darlington | Nelson | Swansea City | Plymouth Argyle |
| 1925–26 | Grimsby Town | Bradford Park Avenue | Reading | Plymouth Argyle |
| 1926–27 | Stoke City | Rochdale | Bristol City (2) | Plymouth Argyle |
| 1927–28 | Bradford Park Avenue | Lincoln City | Millwall | Northampton Town |
| 1928–29 | Bradford City | Stockport County | Charlton Athletic | Crystal Palace |
| 1929–30 | Port Vale | Stockport County | Plymouth Argyle | Brentford |
| 1930–31 | Chesterfield | Lincoln City | Notts County | Crystal Palace |
| 1931–32 | Lincoln City | Gateshead | Fulham | Reading |
| 1932–33 | Hull City | Wrexham | Brentford | Exeter City |
| 1933–34 | Barnsley | Chesterfield | Norwich City | Coventry City |
| 1934–35 | Doncaster Rovers | Halifax Town | Charlton Athletic (2) | Reading |
| 1935–36 | Chesterfield (2) | Chester City | Coventry City | Luton Town |
| 1936–37 | Stockport County (2) | Lincoln City | Luton Town | Notts County |
| 1937–38 | Tranmere Rovers | Doncaster Rovers | Millwall (2) | Bristol City |
| 1938–39 | Barnsley (2) | Doncaster Rovers | Newport County | Crystal Palace |
| 1939–40 to 1945–46 | League suspended due to World War II | |||
| 1946–47 | Doncaster Rovers (2) | Rotherham United | Cardiff City | Queens Park Rangers |
| 1947–48 | Lincoln City (2) | Rotherham United | Queens Park Rangers | Bournemouth & Boscombe Athletic |
| 1948–49 | Hull City (2) | Rotherham United | Swansea City (2) | Reading |
| 1949–50 | Doncaster Rovers (3) | Gateshead | Notts County (2) | Northampton Town |
| 1950–51 | Rotherham United | Mansfield Town | Nottingham Forest | Norwich City |
| 1951–52 | Lincoln City (3) | Grimsby Town | Plymouth Argyle (2) | Reading |
| 1952–53 | Oldham Athletic | Port Vale | Bristol Rovers | Millwall |
| 1953–54 | Port Vale (2) | Barnsley | Ipswich Town | Brighton & Hove Albion |
| 1954–55 | Barnsley (3) | Accrington Stanley | Bristol City (3) | Leyton Orient |
| 1955–56 | Grimsby Town (2) | Derby County | Leyton Orient | Brighton Hove & Albion |
| 1956–57 | Derby County | Hartlepool United | Ipswich Town (2) | Torquay United |
| 1957–58 | Scunthorpe United | Accrington Stanley | Brighton & Hove Albion | Brentford |
1958-1992
1992-2004
| Season | Winner | Runner Up | Playoff Winner |
|---|---|---|---|
| 1992–93 | Stoke City (2) | Bolton Wanderers | West Bromwich Albion |
| 1993–94 | Reading (3) | Port Vale | Burnley |
| 1994–95 | Birmingham City | Brentford (not promoted) | Huddersfield Town |
| 1995–96 | Swindon Town | Oxford United | Bradford City |
| 1996–97 | Bury (2) | Stockport County | Crewe Alexandra |
| 1997–98 | Watford (2) | Bristol City | Grimsby Town |
| 1998–99 | Fulham (2) | Walsall | Manchester City |
| 1999–2000 | Preston North End (2) | Burnley | Gillingham |
| 2000–01 | Millwall (3) | Rotherham United | Walsall |
| 2001–02 | Brighton & Hove Albion (2) | Reading | Stoke City |
| 2002–03 | Wigan Athletic | Crewe Alexandra | Cardiff City |
| 2003–04 | Plymouth Argyle (4) | Queens Park Rangers | Brighton & Hove Albion |
2004-present
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