The 2017 Supercars Championship (formally known as the 2017 Virgin Australia Supercars Championship) was an FIA-sanctioned international motor racing series for Supercars, which prior to July 2016 had been known as V8 Supercars. It was the nineteenth running of the Supercars Championship and the twenty-first series in which Supercars have contested the premier Australian touring car title.

The 2017 season saw the category undergo a substantial revision of its technical regulations, with the introduction of Gen 2 Supercar rules which opened the championship up to a wider range of body shapes and engine configurations. Despite this, all teams continued within the previous regulations.

DJR Team Penske was awarded the Teams Championship and Ford won the Manufacturers Championship. Jamie Whincup claimed his seventh title in controversial circumstances when Scott McLaughlin was penalized in the title-deciding race.

Holden and Nissan were represented by factory-backed teams Triple Eight Race Engineering and Nissan Motorsport respectively.

The following teams and drivers competed in the 2017 championship.

Jason Bright moved his Britek Motorsport Racing Entitlement Contract (REC) from Brad Jones Racing to Prodrive Racing Australia.

Super Black Racing shut down at the end of 2016, with its REC sold to Prodrive Racing Australia co-owner, Rusty French, who on-sold it to Tim Blanchard Racing.

Triple Eight Race Engineering became the official Holden factory team. Walkinshaw Racing, which competed as the factory Holden Racing Team from 1990 to 2016, became a customer Holden team instead.