Heinz-Harald Frentzen won the Italian Grand Prix 1999 at Autodromo Nazionale di Monza on 12 September 1999, starting from P2 on the grid. Ralf Schumacher finished second for Williams, with Mika Salo completing the podium for Ferrari.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 2 | Heinz-Harald FrentzenFRE | Jordan | 53 | 1:17:02.923 | 10 | |
| 2 | 5 | Ralf SchumacherSCH | Williams | 53 | +3.272 | 6 | |
| 3 | 6 | Mika SaloSAL | Ferrari | 53 | +11.932 | 4 | |
| 4 | 7 | Rubens BarrichelloBAR | Stewart | 53 | +17.630 | 3 | |
| 5 | 3 | David CoulthardCOU | McLaren | 53 | +18.142 | 2 | |
| 6 | 8 | Eddie IrvineIRV | Ferrari | 53 | +27.402 | 1 | |
| 7 | 4 | Alessandro ZanardiZAN | Williams | 53 | +28.047 | 0 | |
| 8 | 11 | Jacques VilleneuveVIL | BAR | 53 | +41.797 | 0 | |
| 9 | 13 | Jean AlesiALE | Sauber | 53 | +42.198 | 0 | |
| 10 | 9 | Damon HillHIL | Jordan | 53 | +56.259 | 0 | |
| 11 | 10 | Olivier PanisPAN | Prost | 52 | Engine | 0 | |
| R | 15 | Johnny HerbertHER | Stewart | 40 | Clutch | 0 | |
| R | 22 | Toranosuke TakagiTAK | Arrows | 35 | Spun off | 0 | |
| R | 21 | Pedro de la RosaDLR | Arrows | 35 | Withdrew | 0 | |
| R | 1 | Mika HäkkinenHKK | McLaren | 29 | Spun off | 0 | |
| R | 12 | Jarno TrulliTRU | Prost | 29 | Overheating | 0 | |
| R | 18 | Ricardo ZontaZON | BAR | 25 | Wheel bearing | 0 | |
| R | 19 | Luca BadoerBAD | Minardi | 23 | Collision | 0 | |
| R | 14 | Alexander WurzWUR | Benetton | 11 | Electrical | 0 | |
| R | 16 | Pedro DinizDIN | Sauber | 1 | Spun off | 0 | |
| R | 17 | Giancarlo FisichellaFIS | Benetton | 1 | Spun off | 0 | |
| R | 20 | Marc GenéGEN | Minardi | 0 | Collision | 0 |