2006 Japanese motorcycle Grand Prix
The 2006 Japanese motorcycle Grand Prix was the fifteenth race of the 2006 Motorcycle Grand Prix season. It took place on the weekend of 22 –24 September 2006 at the Twin Ring Motegi circuit.250 cc classification
125 cc classification
Below are the standings for the top five riders and constructors after round fifteen has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 319 |
| 2 | Yamaha | 262 |
| 3 |  Ducati | 218 |
| 4 | Suzuki | 136 |
| 5 |  KR211V | 110 |
- Note: Only the top five positions are included for both sets of standings.
Dani Pedrosa