The 2019–20 EFL League One (referred to as the Sky Bet League One for sponsorship reasons) is the 16th season of Football League One under its current title and the 28th season under its current league division format.
Newly promoted Bury were expelled from only the EFL (and not the F.A.) on 27 August 2019, due to financial issues at the club. They could not satisfy the requirements of their notice of withdrawal issued by the EFL for this deadline date. The league will operate with 23 teams for 2019–20, with three teams being relegated to League Two for the 2020–21 season, rather than the usual four. Having not fulfilled any of their league fixtures for the current season, as they were all postponed, no results were expunged.
Financially troubled Bolton entered administration and had been threatened with expulsion but were saved in a buy-out on 28 August.
Bolton failed to fulfil their fixture against Doncaster Rovers on 20 August. They called off the game 26 hours before kick off without informing the EFL nor Doncaster, claiming concerns over younger players' welfare. On 21 November, they were issued with a five-point deduction suspended for 18 months in relation to the Doncaster postponement, as well as a postponement in the 2018–19 season against Brentford in the Championship.
Due to the ongoing COVID-19 pandemic, the season was temporarily suspended on 13 March. On 3 April 2020, this suspension was extended indefinitely.
On 9 June, clubs voted to curtail the season, meaning the final table would be calculated by a points-per-game method with the play-offs being played as normal.
Source: BBC Sport Rules for classification:1st points; 2nd goal difference; 3rd number of goals scored. (C) = Champion; (R) = Relegated; (P) = Promoted; (O) = Play-off winner; (A) = Advances to a further round; (Q) = Qualified to the phase of tournament
Bury deducted 12 points for entering into an insolvency event, before later being expelled from the EFL on August 27 2019. At the time of their expulsion, they had played no matches.
Bolton Wanderers deducted 12 points for entering administration.