WrestleMania 25, also promoted as The 25th Anniversary of WrestleMania, was a 2009 professional wrestling pay-per-view (PPV) event produced by World Wrestling Entertainment (WWE). It was the 25th annual WrestleMania and took place on April 5, 2009, at NRG Stadium (previously known as Reliant Stadium) in Houston, Texas, held for wrestlers from the promotion's Raw, SmackDown, and ECW brand divisions. This was the second WrestleMania held in Houston, after WrestleMania X-Seven in 2001 at the Reliant Astrodome. This would also be the last WrestleMania to feature the ECW brand, as it was dissolved in February 2010, and it was the first WrestleMania of the PG Era.
Eight matches were held on the event's card, which featured a supercard, a scheduling of more than one main bout. The final match of the night, which was the main match of the Raw brand, was a singles match in which Triple H defeated Randy Orton to retain the WWE Championship. The main match of the SmackDown brand was a triple threat match for the World Heavyweight Championship, which saw John Cena defeat defending champion Edge and Big Show to win the championship. The main match of the ECW brand saw WWE Tag Team Champions The Colóns (Carlito and Primo) from SmackDown defeat the World Tag Team Champions John Morrison and The Miz from ECW in a lumberjack match to unify the two championships; the match took place on the event's pre-show. Another marquee match saw The Undertaker defeat Shawn Michaels to extend his undefeated WrestleMania streak to 17–0. Featured matches on the undercard included Matt Hardy defeating Jeff Hardy in an Extreme Rules match, Chris Jericho defeated the team of Roddy Piper, Ricky Steamboat and Jimmy Snuka, and the annual Money in the Bank ladder match which was won by CM Punk over Christian, Finlay, Kane, Kofi Kingston, Mark Henry, Montel Vontavious Porter and Shelton Benjamin.