The Newcastle 500 was an annual motor racing event for Supercars, held at the Newcastle Street Circuit in Newcastle, New South Wales, Australia in 2017, 2018, 2019 and 2023. The event was not held in 2020, 2021 and 2022 due to the COVID-19 pandemic.

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.