The 2021 Boost Mobile Super Trucks Series was the second season for the Boost Mobile Super Trucks, an Australian off-road racing series that serves as a counterpart to the Stadium Super Trucks in the United States. Held over three race weekends, the season began at Symmons Plains Raceway on 17–18 April. The series supported Supercars Championship race weekends.
The COVID-19 pandemic resulted in multiple rounds being cancelled. Paul Morris and Shae Davies were tied for the most points accumulated across the three remaining weekends, though Morris won four races to Davies' two for the tiebreaker.
After the season, the trucks were returned to America after the series failed to renew its partnership with Supercars, who were under new ownership.[1] However, new Supercars CEO Shane Howard expressed his interest in bringing them back for 2023.[2]