WrestleMania XXVII was the 27th annual WrestleMania professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE). It was held for wrestlers from the promotion's Raw and SmackDown brand divisions. The event took place on April 3, 2011, at the Georgia Dome in Atlanta, Georgia. The event was the first WrestleMania held in the state of Georgia and the second to be held in Southeastern United States, following WrestleMania XXIV. It was also the final WrestleMania held during the first brand extension, which ended in August, but was reinstated in July 2016. This was also the company's final event to be promoted under the full name of World Wrestling Entertainment, as immediately following this event, the company strictly began to refer to itself by the WWE abbreviation. Dwayne "The Rock" Johnson served as the host of the event.

WrestleMania is a professional wrestling event held annually between mid-March and mid-April by the American company WWE, the world's largest professional wrestling promotion. Since premiering in 1985, 40 events have been held, with its most recent 40th edition occurring at Lincoln Financial Field in Philadelphia, Pennsylvania on April 6 and 7, 2024. WrestleMania was WWE's first-ever pay-per-view (PPV) produced and is the most successful and longest-running professional wrestling event in history. The event has been broadcast through traditional PPV since 1985 and has been available via livestreaming since WrestleMania XXX in 2014, which was WWE's first major event available through this medium. WrestleMania was conceptualized by former WWE executive chairman Vince McMahon and named by ring announcer and WWE Hall of Famer Howard Finkel. It is the company's flagship event and along with Royal Rumble, SummerSlam, Survivor Series, and Money in the Bank, it is referred to as one of the "Big Five", WWE's five biggest annual events of the year.