The Sydney SuperNight is an annual motor racing event for Supercars, held at Sydney Motorsport Park in Eastern Creek, New South Wales. The event has been a semi-regular part of the Supercars Championship—and its previous incarnations, the Australian Touring Car Championship, Shell Championship Series and V8 Supercars Championship—since 1992. Since 2018, this is the only active Supercars event held in metropolitan Sydney.

The Supercars Championship currently known as the Repco Supercars Championship under sponsorship, is a touring car racing category in Australia and New Zealand, running as an International Series under Fédération Internationale de l'Automobile (FIA) regulations, governing the sport.