| Season | |
|---|---|
| Grands Prix | 11 |
| Duration | 17 April–25 September |
| Drivers | |
| Champions |  Daniël Willemsen
 Sven Verbrugge |
| Sidecarcross des Nations |  Latvia |
The 2005 FIM Sidecarcross world championship, the 26th edition of the competition, started on 17 April and finished after eleven race weekends on 18 September 2005 with Daniël Willemsen taking out the title once more.