The 2019–20 season was the 105th season of the Isthmian League, which is an English football competition featuring semi-professional and amateur clubs from London, East and South East England.
As a result of the COVID-19 pandemic, this season's competition was formally abandoned on 26 March 2020, with all results from the season being expunged, and no promotion or relegation taking place to, from, or within the competition.
[1] On 30 March 2020, sixty-six non-league clubs sent an open letter to the Football Association requesting that they reconsider their decision.
[2] A legal appeal against the decision, funded by South Shields of the Northern Premier League, was dismissed in June 2020.
The 2019–20 Alan Turvey Trophy (formerly the Isthmian League Cup) is the 46th season of the Alan Turvey Trophy, the cup competition of the whole Isthmian League.