Formula 3000 was a type of open wheel, single seater formula racing, occupying the tier immediately below Formula One and above Formula Three. It was named for the fact that the cars were powered by 3000 cc engines.

The most prestigious F3000 series, International Formula 3000, was introduced by the Fédération Internationale de l'Automobile (FIA) in 1985 to replace Formula Two, and was itself replaced by the GP2 Series in 2005. While the International series is usually synonym with F3000, other series racing to F3000 specification have existed.

A small British Formula 3000 series ran for several years in the late 1980s and early 1990s, usually using year-old cars. Founded in 1989 as the British Formula 3000 Championship, the series was renamed the British Formula Two Championship in 1992, but grids diminished quickly and it was ended after the 1994 season. It was restarted in 1996 and cancelled once more the following year, after one race had been held with only three cars. Two other attempts at restarting F3000 racing in the UK failed.