The 1912 Grand Prix season saw Grand Prix motor racing in Europe and the United States. The growing economic confidence and interest from car manufacturers saw bigger fields and more races in the season. The French Grand Prix was held for the first time since 1908 and staged at Dieppe. The American Grand Prize was held in Milwaukee, moving from its previous home in Savannah.

Grand Prix motor racing, a form of motorsport competition, has its roots in organised automobile racing that began in France as early as 1894. It quickly evolved from simple road races from one town to the next, to endurance tests for car and driver. Innovation and the drive of competition soon saw speeds exceeding 100 miles per hour (160 km/h), but because early races took place on open roads, accidents occurred frequently, resulting in deaths both of drivers and of spectators. A common abbreviation used for Grand Prix racing is "GP" or "GP racing".