WrestleMania III was the third annual WrestleMania professional wrestling pay-per-view event produced by the World Wrestling Federation (WWF). The event was held on March 29 1987 at the Pontiac Silverdome in Pontiac, Michigan. Its tagline was "Bigger, Better, Badder." The official theme song was Aretha Franklin's "Who's Zooming Who?," which was used during the ending video montage.

The event is particularly notable for the reported attendance of 93,173, the largest recorded attendance for a live indoor sporting event in North America and the largest paying crowd in the history of professional wrestling. Though the attendance number is disputed, the event is considered to be the pinnacle of the 1980s wrestling boom. Almost one million fans watched the event at 160 closed circuit locations in North America. The number of people watching via pay-per-view was estimated at several million, and pay-per-view revenues were estimated at $10 million.