Races in calendar week 37/2003

All motorsport events on the weekend of 12–14 Sep 2003.

Circuit	Country	Series
Lausitz	Germany	Race results available (full) german V8 Star 2003
Monza	Italy	Race results available (full) FIA Formula 1 World Championship 2003 Race results available (full) FIA Formula 3000 Int. Championship 2003 Race results available (full) Porsche Supercup 2003
Motegi	Japan	Race results available (full) All-Japan GT Championship 2003
Valencia (Cheste)	Spain	Race results available (full) Spanish Formula 3 Championship 2003