2006 Chinese motorcycle Grand Prix
The 2006 Chinese motorcycle Grand Prix was the fourth race of the 2006 Motorcycle Grand Prix season. It took place on the weekend of 12–14 May 2006 at the Shanghai International Circuit.
250 cc classification
125 cc classification
Below are the standings for the top five riders and constructors after round four has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 90 |
| 2 | Yamaha | 59 |
| 3 |  Ducati | 59 |
| 4 | Suzuki | 29 |
| 5 | Kawasaki | 28 |
- Note: Only the top five positions are included for both sets of standings.
Nicky Hayden
Dani Pedrosa
Casey Stoner