WrestleMania XL was a 2024 professional wrestling event produced by WWE. It was the 40th annual WrestleMania and took place as a two-night event on Saturday, April 6, and Sunday, April 7, 2024, at Lincoln Financial Field in Philadelphia, Pennsylvania. The event aired via pay-per-view (PPV) and livestreaming and featured wrestlers from the promotion's Raw and SmackDown brand divisions. This was the second WrestleMania to be held in both the city of Philadelphia and state of Pennsylvania, after WrestleMania XV in 1999.

The card comprised a total of 14 matches, evenly divided between each night. In the main event for Night 1, The Bloodline (The Rock and Roman Reigns) defeated Cody Rhodes and Seth "Freakin" Rollins in a tag team match, which made the stipulation of the Undisputed WWE Universal Championship match on Night 2 a Bloodline Rules match. In other prominent matches, Sami Zayn defeated Gunther to win Raw's Intercontinental Championship, ending the latter's record-setting reign at 666 days, and in the opening bout, Rhea Ripley defeated Becky Lynch to retain Raw's Women's World Championship.

In the main event for Night 2, Cody Rhodes defeated Roman Reigns in a Bloodline Rules match to win SmackDown's Undisputed WWE Universal Championship, ending the latter's world championship reign at 1,316 days. In other prominent matches, Bayley defeated Iyo Sky to win SmackDown's WWE Women's Championship, Logan Paul defeated Randy Orton and Kevin Owens in a triple threat match to retain SmackDown's United States Championship, and in the opening bout, Drew McIntyre defeated Seth "Freakin" Rollins to win Raw's World Heavyweight Championship, after which, Damian Priest cashed in his Money in the Bank contract and defeated McIntyre to win the title.

This was the first WrestleMania held after WWE merged with the Endeavor subsidiary Ultimate Fighting Championship (UFC) in September 2023, under the banner of TKO Group Holdings. It was subsequently the first WrestleMania under TKO and the first not directly under McMahon family control. It was also the final WrestleMania to livestream on the standalone WWE Network in most international markets as the service moved to Netflix in January 2025, with only a select few territories still maintaining the WWE Network due to pre-existing contracts.

The event received highly positive reviews, with Night 2 being singled out for critical acclaim. Praise was given to all seven championship matches, with the Undisputed WWE Universal Championship match garnering ubiquitous acclaim for its storytelling and satisfying conclusion.