1999 Valencian Community motorcycle Grand Prix
The 1999 Valencian Community motorcycle Grand Prix was the twelfth round of the 1999 Grand Prix motorcycle racing season. It took place on 19 September 1999 at the Circuit de Valencia.
This race saw the last French Rider to win a race in the premier class until Fabio Quartararo at the 2020 Spanish Grand Prix almost 21 years later.250 cc classification
125 cc classification
Championship standings after the race (500cc)
Below are the standings for the top five riders and constructors after round twelve has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 269 |
| 2 | Yamaha | 190 |
| 3 | Suzuki | 173 |
| 4 |  Aprilia | 94 |
| 5 |  MuZ Weber | 52 |
- Note: Only the top five positions are included for both sets of standings.
Àlex Crivillé
Kenny Roberts Jr.