The 2018 Adelaide 500 was a motor racing event held on the weekend of 2 to 4 March 2018 at the Adelaide Street Circuit in Adelaide, South Australia.

It marked the twentieth running of the Adelaide 500 and was the first event of sixteen in the 2018 Supercars Championship.

It comprised two races of 250 kilometres.

[1] Support races included the opening round of the 2018 Super2 Series, a series for older model Supercars [1] and the inaugural round of the new SuperUtes Series.

Shane van Gisbergen won both Race 1 and Race 2, driving a Holden Commodore ZB for Triple Eight Race Engineering.