The 2002 No Mercy was the fifth No Mercy 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 October 20, 2002, at the Alltel Arena in North Little Rock, Arkansas. It was the first No Mercy held following the introduction of the brand extension, as well as the first No Mercy held under the WWE name after the promotion was renamed from World Wrestling Federation (WWF) to WWE in May. To date, it is the only WWE pay-per-view event ever held in the state of Arkansas.

SmackDown is a brand of the American professional wrestling promotion WWE that was established on March 25, 2002. Brands are divisions of WWE's roster where wrestlers are assigned to perform on a weekly basis when a brand extension is in effect. Wrestlers assigned to SmackDown primarily appear on the brand's weekly television program, Friday Night SmackDown, also referred to simply as SmackDown. It is one of WWE's two main brands, along with Raw, collectively referred to as WWE's main roster. The brand extension was discontinued between August 2011 and July 2016.