1999 Malaysian motorcycle Grand Prix
The 1999 Malaysian motorcycle Grand Prix was the first round of the 1999 Grand Prix motorcycle racing season. It took place on 18 April 1999 at the Sepang International Circuit.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 one has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Suzuki | 25 |
| 2 | Yamaha | 20 |
| 3 | Honda | 16 |
| 4 |  Modenas KR3 | 4 |
| 5 |  Aprilia | 3 |
- Note: Only the top five positions are included for both sets of standings.
Kenny Roberts Jr.
Carlos Checa
Mick Doohan