1999 Dutch TT
The 1999 Dutch TT was the seventh round of the 1999 Grand Prix motorcycle racing season. It took place on 26 June 1999 at the TT Circuit Assen located in Assen, Netherlands.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 seven has concluded.
;Riders' Championship standings
;Constructors' Championship standings
| Constructor | Points |
| 1 |  Honda | 161 |
| 2 | Yamaha | 107 |
| 3 | Suzuki | 94 |
| 4 |  Aprilia | 50 |
| 5 |  MuZ Weber | 28 |
- Note: Only the top five positions are included for both sets of standings.
Àlex Crivillé
Kenny Roberts Jr.