Formula SimRacing (FSR) is an international sim racing league. It is owned and organised by the International SimRacing Club which was founded in 1999. The first season of the league was in 2001. Currently, the racing simulation game rFactor 2 is being used for all events.
FSR has hosted up to five divisions in the regular season, but normally hosts three. The top division is the World Championship, and is one of the most prestigious simracing divisions in the world.
FSR hosts a series during the winter break named the Winter Series. The champions of Winter Series usually gets a free Drivers' License for the following regular season. Winter Series is open and free to race.