WWE Day 1 was a professional wrestling pay-per-view (PPV) and livestreaming event produced by WWE. It was held for wrestlers from the promotion's Raw and SmackDown brand divisions. The event took place on Saturday, January 1, 2022, at the State Farm Arena in Atlanta, Georgia, and was the company's only pay-per-view and livestreaming event to take place on New Year's Day. Its title alluded to its New Year's scheduling and was WWE's first pay-per-view to have the New Year's theme since New Year's Revolution in 2007.

Seven matches were contested at the event, including one on the Kickoff pre-show. In the main event, Brock Lesnar defeated Bobby Lashley, Kevin Owens, Seth Rollins, and defending champion Big E in a fatal five-way match to win Raw's WWE Championship by pinning Big E. Lesnar was originally scheduled to face Roman Reigns for SmackDown's Universal Championship, but that match was canceled hours before the event due to Reigns testing positive for COVID-19. In other prominent matches, Edge defeated The Miz, Becky Lynch defeated Liv Morgan to retain the Raw Women's Championship, and in the opening bout, The Usos (Jey Uso and Jimmy Uso) defeated The New Day (Kofi Kingston and King Woods) to retain the SmackDown Tag Team Championship.

The scheduling of Day 1 caused the cancelation of the TLC: Tables, Ladders & Chairs event, which was usually held in late December. Day 1 was also WWE's first event to be branded as a "Premium Live Event", a term the company introduced to refer to their events airing on pay-per-view and WWE's livestreaming platforms. It would also be a one-off event by WWE, as another event was scheduled for 2023, but was canceled.