SummerSlam (2003) was a professional wrestling pay-per-view event produced by World Wrestling Entertainment (WWE) and presented by Stacker 2's YJ Stinger. It took place on August 24, 2003, at the America West Arena in Phoenix, Arizona. It was the 16th annual SummerSlam event and starred wrestlers from the Raw and SmackDown! brands.Nine professional wrestling matches were scheduled on the event's card, which featured a supercard, a scheduling of more than one main event.