1906 circuit racing season

The 1906 circuit racing season was the fifth year of international circuit racing. Three new races joined the calendar, including the first race ever to bear the Grand Prix name: the French Grand Prix. The Frankfurter Rundstreckrennen also ceased to be a part of the calendar. CARS recognises all of the listed races as Grands Prix.

AAA Championship

 * ''See: 1907 AAA Championship

The Vanderbilt Cup race also counted towards the AAA Championship, despite being recognised as a Grand Prix by CARS.