WrestleMania 36 was a 2020 professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It was the 36th annual WrestleMania and was held for wrestlers from the promotion's Raw, SmackDown, and NXT brand divisions, the only for the latter. Due to the COVID-19 pandemic, the event was filmed on March 25 and 26, 2020, at the WWE Performance Center in Orlando, Florida and was broadcast as a two-night event on Saturday, April 4, and Sunday, April 5, 2020. This marked the first time WrestleMania was broadcast over two nights and on tape delay. This change to a two-night format became permanent, with the format also expanding to SummerSlam beginning with its 2025 installment. On pay-per-view, the two productions were sold as individual shows, with both available as a package deal. National Football League (NFL) player Rob Gronkowski served as the host of the event.

The event was originally scheduled to take place solely on April 5, 2020, at Raymond James Stadium in Tampa, Florida and was to air live. In mid-March, all WWE programming was relocated to the Performance Center training facility due to the COVID-19 pandemic, with no audience and only essential staff present. WrestleMania 36 was the first major professional wrestling event to be affected by the pandemic, and is in turn the only edition of WrestleMania not to feature a live crowd. Taking advantage of the format, two cinematic matches—a "Boneyard match" and a "Firefly Fun House match"—were filmed offsite in an atypical, cinematic style. In June, Florida lifted restrictions on paid spectator attendance at sporting events with the next year's WrestleMania 37 moved to Raymond James Stadium; WrestleMania 37 in turn adopted much of the buccaneer-themed marketing originally used for WrestleMania 36, including a similar logo. This would also be the final WrestleMania to livestream on the WWE Network in the United States as the American version of the service merged under Peacock in March 2021.

The card comprised 18 matches which were divided between the two nights, including one match on each night's Kickoff pre-show and a dark match on the second night. In the main event of the show for Part 1, The Undertaker, partly returning to his "American Bad Ass" character for the first time in over 16 years, defeated AJ Styles in a Boneyard match, which was later revealed to be Undertaker's final match, while in the final match from the Performance Center, which was SmackDown's main match, Braun Strowman defeated Goldberg to win the Universal Championship. In other prominent matches, Becky Lynch defeated Shayna Baszler to retain the Raw Women's Championship, and Kevin Owens defeated Seth Rollins in a No Disqualification match. In the main event for Part 2, which was the main match for Raw, Drew McIntyre defeated Brock Lesnar to win the WWE Championship, after which an impromptu dark match occurred in which McIntyre retained the title against Big Show, which was shown on the April 6 episode of Raw. In the penultimate match, "The Fiend" Bray Wyatt defeated John Cena in a Firefly Fun House match. In other prominent matches, Edge defeated Randy Orton in a Last Man Standing match, which was Edge's first singles match since April 2011, and in the opening bout, Charlotte Flair defeated Rhea Ripley to win the NXT Women's Championship for a second time, which was the only time an NXT championship was defended at a WrestleMania.