Wrestlemania Backlash is an annual professional wrestling pay-per-view event held by WWE.

The first edition of the event dates back to 1999, when it was part of the In Your House series. After the 2009 edition, the event disappeared from programming until 2016.

The original concept of the pay-per-view was based around the backlash from WWE's flagship event, WrestleMania. From its inception until 2009, Backlash held this position as the post-WrestleMania PPV and was held annually in April, with the exception of the 2005 event, which was held in May.

In July 2021, WWE resumed a live touring schedule. On February 11, 2022, WWE announced that the 2022 event would also be held under the WrestleMania Backlash name. On March 8, 2023, however, the 2023 event was announced and reverted the event series to its original name of Backlash, but maintaining its post-WrestleMania theme.

It was also announced to take place on Saturday, May 6, 2023, at the Coliseo de Puerto Rico Jose Miguel Agrelot in San Juan, Puerto Rico, marking the first WWE event held in Puerto Rico since New Year's Revolution in 2005, and second event overall.