Races in calendar week 20/2003

All motorsport events on the weekend of 16–18 May 2003.

Circuit	Country	Series
Birmingham (Barber Motorsport Park)	USA	Race results available (full) Grand-Am Sports Car Series 2003
Imola	Italy	Race results available (full) Italian Formula 3 Championship 2003
Indianapolis (oval)	USA	Race results available (full) IRL Infiniti Pro Series 2003
Jarama	Spain	Race results available (full) Spanish Formula 3 Championship 2003
Magny-Cours	France	Race results available (full) Formula Nissan V6 World Series 2003
Okayama	Japan	Race results available (full) All-Japan Formula 3 Championship 2003
Zeltweg (Spielberg)	Austria	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