Races in calendar week 18/2006

All motorsport events on the weekend of 5–7 May 2006.

Circuit	Country	Series
Fuji	Japan	Race results available (full) Japanese Super GT Series 2006
Imola	Italy	Race results available (full) Euroseries 3000 2006 Race results available (full) Italian Formula 3 Championship 2006 Race results available (full) Italian Superstars Championship 2006
Monterey (Laguna Seca)	USA	Race results available (full) Grand-Am Sports Car Series 2006
Nürburgring	Germany	Race results available (full) FIA Formula 1 World Championship 2006 Race results available (full) GP2 Series 2006 Race results available (full) Porsche Supercup 2006
Santa Fe	Argentina	Race results available (full) South American Formula 3 Championship 2006
Silverstone	Great Britain	Race results available (full) FIA GT Championship 2006
Winton Raceway	Australia	Race results available (full) Formula 4000 by Holden 2006