2021 TCR Australia Touring Car Series

The 2021 TCR Australia Series (known for sponsorship reasons as the 2021 Supercheap Auto TCR Australia Series) was an Australian motor racing competition for TCR Touring Cars. It was the second TCR Australia Touring Car Series. The series was sanctioned by Motorsport Australia as a National Series with the Australian Racing Group Pty Ltd appointed as the Category Manager. It was contested as part of the renamed Motorsport Australia Championships series.

The series was won by Chaz Mostert driving an Audi RS 3 LMS TCR.