WrestleMania 18 (stylized as WrestleMania X8) was the 18th annual WrestleMania professional wrestling pay-per-view (PPV) event produced by the World Wrestling Federation (WWF). It took place on St Patrick’s Day, March 17, 2002, at the SkyDome in Toronto, Ontario, Canada, the second WrestleMania at that venue after WrestleMania VI in April 1990. The event marked the final WrestleMania event held under the WWF name and the Attitude Era, as the company was renamed to World Wrestling Entertainment (WWE) in May and entered the Ruthless Aggression Era later that year. It was also the last WrestleMania held before the introduction of the brand extension just a week after the event. The record-breaking attendance for the SkyDome of 68,237 grossed approximately $6.1 million CAD ($3.9 million USD). WrestleMania weekend also included WWF Fan Axxess at the Canadian National Exhibition's Automotive Building.This WrestleMania would be Hulk Hogan's first WrestleMania appearance in nine years, and his 10th overall. He competed in the first nine WrestleMania events, main eventing eight of those nine (an all-time record) (WrestleMania IV would be the only non main event pay-per-view for Hogan). After WrestleMania IX, Hogan left the WWF in late 1993, and signed with rival company WCW in 1994.

Eleven matches were contested at the event. The Rock defeated Hollywood Hulk Hogan in the main attraction match dubbed "Icon vs. Icon", while in the main event, Triple H defeated Chris Jericho to win the Undisputed WWF Championship. In other prominent matches on the undercard Stone Cold Steve Austin defeated Scott Hall, The Undertaker defeated Ric Flair in a no disqualification match, and Rob Van Dam defeated William Regal to win the WWF Intercontinental Championship.