The 1950 Formula One season was the fourth season of the FIA's Formula One motor racing. It featured the inaugural FIA World Championship of Drivers, as well as several non-championship races. The championship, which commenced on 13 May and ended on 3 September, consisted of six Grand Prix races, each held in Europe and open to Formula One cars, plus the Indianapolis 500, which was run to AAA National Championship regulations. Giuseppe Farina won the championship from Juan Manuel Fangio and Luigi Fagioli.

The Alfa Romeo 158/159, also known as the Alfetta, is a Grand Prix racing car produced by Italian manufacturer Alfa Romeo. It is one of the most successful racing cars ever; the 158 and its derivative, the 159, took 47 wins from 54 Grands Prix entered. It was originally developed for the pre-World War II voiturette formula (1937) and has a 1.5-litre straight-8 supercharged engine. Following World War II, the car was eligible for the new Formula One introduced in 1947. In the hands of drivers such as Nino Farina, Juan Manuel Fangio and Luigi Fagioli, it dominated the first two seasons of the World Championship of Drivers.