The calendar for the 2003 season of the Superbike, Supersport and Sidecar World Championships is as follows.

The proposed round in Malaysia has been postponed until early 2004.

2003 World Superbike Championship calendar:

1. March 2 Spain Valencia **
2. March 30 Australia Phillip Island *
3. April 27 Japan Sugo *
4. May 18 Italy Monza **
5. June 1 Germany Oschersleben **
6. June 15 Great Britain Silverstone **
7. June 22 San Marino Misano **
8. July 13 United States Laguna Seca
9. July 27 Europe Brands Hatch **
10. September 7 Netherlands Assen **
11. September 28 Italy Imola **
12. October 19 France Magny-Cours **

Key:
* = Supersport round.
** = Supersport and Sidecar round