WWE Clash at the Castle was a professional wrestling pay-per-view (PPV) and livestreaming event produced by the American promotion WWE. It was held for wrestlers from the promotion's Raw and SmackDown brand divisions. The event took place on Saturday, September 3, 2022, at the Principality Stadium in Cardiff, Wales. This marked WWE's first major stadium event to take place in the United Kingdom since the 1992 SummerSlam and the company's first UK PPV overall since Insurrextion in 2003. The event's title is a reference to Cardiff Castle, which is situated near the Principality Stadium.

Seven matches were contested at the event, including one on the Kickoff pre-show. In the main event, Roman Reigns defeated Drew McIntyre to retain the Undisputed WWE Universal Championship. In other prominent matches, Seth "Freakin" Rollins defeated Matt Riddle, Gunther defeated Sheamus to retain SmackDown's Intercontinental Championship, and in the opening bout, Damage CTRL (Bayley, Dakota Kai, and Iyo Sky) defeated Bianca Belair, Alexa Bliss, and Asuka in a six-woman tag team match. The event was also notable for the main roster debuts of NXT's Giovanni Vinci, who rejoined Gunther and Ludwig Kaiser to reform Imperium, and Solo Sikoa, one of Reigns' cousins and the younger brother of The Usos (Jey Uso and Jimmy Uso), thus officially joining The Bloodline stable.