The 2011 FIM Motocross World Championship was the 55th F.I.M. Motocross World Championship season. It included 30 races at 15 events including Bulgaria, The Netherlands, the United States, Brazil, France, Portugal, Spain, Germany, Sweden, Latvia, Italy, the United Kingdom, Latvia, and Slovenia.
The 2011 calendars of the FIM Motocross World Championships promoted by Youthstream were finalised on 25 October 2010. In MX3 two final rounds of the season, originally scheduled in Geneva (Switzerland) and in Spain on 4 and 11 September were cancelled on 20 July 2011.
Points are awarded to the top 20 classified finishers.