The March 821 was a Formula 1 racecar that was raced in the 1982 season of Formula One.
The car designed was by Robin Herd and Adrian Reynard. It was fitted with a Ford Cosworth DFV 3.0 V8.
The car proved to be very competitive but it never came home with any points. The best result was seventh with Jochen Mass behind the wheel at the United States Grand Prix East.