Wales Rally GB was the most recent iteration of the United Kingdom's premier international motor rally, which ran under various names since the first event held in 1932. It was consistently a round of the FIA World Rally Championship (WRC) calendar from the inaugural 1973 season until the rally's final running in 2019, and was also frequently included in the British Rally Championship.

Rallying is a wide-ranging form of motorsport with various competitive motoring elements such as speed tests, navigation tests, or the ability to reach waypoints or a destination at a prescribed time or average speed. Rallies may be short in the form of trials at a single venue, or several thousand miles long in an extreme endurance rally.