WWE Greatest Royal Rumble was a professional wrestling pay-per-view and livestreaming event produced by WWE. It was held for wrestlers from the promotion's Raw, SmackDown, and 205 Live brand divisions. The event took place on April 27, 2018, at the King Abdullah Sports City's King Abdullah International Stadium in Jeddah, Saudi Arabia. It was the first in a series of WWE events held in Saudi Arabia in support of Saudi Vision 2030, the country's social and economic reform program. At the event, all men's main roster championships at the time were defended, in addition to a 50-man Royal Rumble match, titled the Greatest Royal Rumble match.