The 2020 All Out was the second annual All Out professional wrestling pay-per-view (PPV) event produced by All Elite Wrestling (AEW). It was broadcast during Labor Day weekend on Saturday, September 5, 2020. While the majority of the event aired live from Daily's Place in Jacksonville, Florida, the Tooth and Nail match between Dr. Britt Baker, D.M.D. and Big Swole was pre-taped prior to the event at Baker's real-life dental clinic in Winter Park, Florida. The event aired through traditional PPV outlets, as well as on B/R Live in North America and FITE TV internationally.

The event was originally slated to take place at the Sears Centre Arena in the Chicago suburb of Hoffman Estates, Illinois, where the previous edition of All Out was held. Illinois Governor J. B. Pritzker issued a disaster proclamation, the state's equivalent to a state of emergency, since March 9, which banned large public gatherings due to the COVID-19 pandemic that affected the state. As a result, the event was moved to Daily's Place, where all of AEW's events had been held since March. This was the first AEW PPV to have ticketed fans since Revolution in February, although the capacity of the venue was reduced due to the pandemic. Also due to the pandemic, this was the only All Out event to not take place in the Chicago metropolitan area.

Eleven matches were contested at the event, including two on The Buy In pre-show. In the main event, Jon Moxley defeated MJF to retain the AEW World Championship. In the penultimate match, Orange Cassidy defeated Chris Jericho in a Mimosa Mayhem match. In other prominent matches, FTR (Cash Wheeler and Dax Harwood) defeated Kenny Omega and Adam Page to win the AEW World Tag Team Championship, Hikaru Shida retained the AEW Women's World Championship in an interpromotional match against Thunder Rosa of the National Wrestling Alliance (NWA), and Matt Hardy defeated Sammy Guevara in a Broken Rules match.

The event was met with mixed to negative reviews, in contrast to the praise that AEW's previous PPV events had received. Criticism was mainly focused on an accident that occurred in the match between Hardy and Guevara in which Guevara speared Hardy from a scissor lift through a table, accidentally causing Hardy to legitimately hit his head on the concrete floor underneath the table; he appeared to be knocked out and the match was paused, but Hardy was then allowed to continue the match. The accident notably led to AEW adding new protocols in case a similar incident happens, with referees gaining the ability to use two-way communication to call medical staff and stop matches when necessary. Criticism was also directed towards much of the undercard, but the three championship matches on the show were generally well received.