Races in calendar week 16/2003

All motorsport events on the weekend of 18–20 Apr 2003.

Circuit	Country	Series
Imola	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
Nürburgring	Germany	Race results available (full) german V8 Star 2003
Snetterton	Great Britain	Race results available (full) British Formula 3 Championship 2003