Race Result
| GP n. 643 - 12/09/1999 - Grand Prix of Italy Autodromo Nationale di Monza |
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| Winner: | Heinz-Harald Frentzen / Jordan-Mugen-Honda - 1:17'02.923 | ||||||
| Pole Position: | Mika Hakkinen / McLaren-Mercedes - 1:22.432 | ||||||
| Fastest Lap: | Ralf Schumacher / Williams-Supertec - 1:25.579 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 8 |  Heinz-Harald Frentzen |
Jordan-Mugen-Honda | 53 | 1:17'02.923 | 2 | 10 |
| 2 | 6 | Ralf Schumacher |
Williams-Supertec | 53 | +3.272 | 5 | 6 |
| 3 | 3 |  Mika Salo |
Ferrari | 53 | +11.932 | 6 | 4 |
| 4 | 16 |  Rubens Barrichello |
Stewart-Ford | 53 | +17.630 | 7 | 3 |
| 5 | 2 |  David Coulthard |
McLaren-Mercedes | 53 | +18.142 | 3 | 2 |
| 6 | 4 | Eddie Irvine |
Ferrari | 53 | +27.402 | 8 | 1 |
| 7 | 5 |  Alessandro Zanardi |
Williams-Supertec | 53 | +28.047 | 4 | 0 |
| 8 | 22 |  Jacques Villeneuve |
BAR-Supertec | 53 | +41.797 | 11 | 0 |
| 9 | 11 |  Jean Alesi |
Sauber-Petronas | 53 | +42.198 | 13 | 0 |
| 10 | 7 | Damon Hill |
Jordan-Mugen-Honda | 53 | +56.259 | 9 | 0 |
| 11 | 18 | Olivier Panis |
Prost-Peugeot | 52 | engine | 10 | 0 |
| Ret | 17 | Johnny Herbert |
Stewart-Ford | 40 | clutch | 15 | 0 |
| Ret | 14 |  Pedro de la Rosa |
Arrows | 35 | withdrew | 21 | 0 |
| Ret | 15 |  Toranosuke Takagi |
Arrows | 35 | spun off | 22 | 0 |
| Ret | 1 | Mika Hakkinen |
McLaren-Mercedes | 29 | spun off | 1 | 0 |
| Ret | 19 | Jarno Trulli |
Prost-Peugeot | 29 | overheating | 12 | 0 |
| Ret | 23 | Ricardo Zonta |
BAR-Supertec | 25 | wheel bearing | 18 | 0 |
| Ret | 20 | Luca Badoer |
Minardi-Ford | 23 | collision | 19 | 0 |
| Ret | 10 |  Alexander Wurz |
Benetton-Playlife | 11 | electrical | 14 | 0 |
| Ret | 9 | Giancarlo Fisichella |
Benetton-Playlife | 1 | spun off | 17 | 0 |
| Ret | 12 | Pedro Diniz |
Sauber-Petronas | 1 | spun off | 16 | 0 |
| Ret | 21 | Marc Gene |
Minardi-Ford | 0 | collision | 20 | 0 |