The 2001 International Formula 3000 Championship was the 35th season of the second-tier motorsport feeder championship of Formula One and the 17th season to be held under the series name. It featured the 2001 FIA International Formula 3000 Championship, a one-make motor racing series, recognised by the sport's governing body, the Fédération Internationale de l'Automobile (FIA), as the second highest class of competition of single seater racing cars. A total of 37 drivers representing 13 teams contested 12 races, starting in Brazil on 31 March and ending in Italy on 15 September as they competed for the Drivers' and Teams' Championships.
The calendar featured two significant changes from the 2000 season. They were the inclusion of a season-opening round at the Autódromo José Carlos Pace in Brazil to bring the series to South America for the first time in the modern era and a year-ending race at Italy's Autodromo Nazionale di Monza. Three teams withdrew from the championship before the season: Fortec Motorsport withdrew after they were unable to sign any suitable drivers and desired to focus on other junior series. MySap.com pulled out when owner David Brown left its parent company McLaren to join the Jordan Grand Prix team in Formula One and the World Racing Team withdrew due to a lack of financing and driver stability.
Justin Wilson of the Coca-Cola Nordic Team won three races over the course of the season and secured the Drivers' Championship with one race to go. He became the first British driver in history to win the International Formula 3000 Championship and accumulated a record-breaking 71 points. The runner-up was Super Nova Racing driver Mark Webber, who was 32 points behind Wilson, after a series of accidents eliminated him from title contention in the final third of the season. Wilson's teammate Tomáš Enge in third tied with Webber on championship points with two race victories. Coca-Cola Nordic Team took the Teams' Championship with two rounds remaining, ahead of Petrobras Junior Team and Super Nova Racing.