Autodromo Nazionale di Monza · 7 September 1986
Nelson Piquet won the 1986 Italian Grand Prix for Williams from 6th on the grid, 9.828s ahead of Nigel Mansell. Philippe Streiff gained the most places, from 23rd on the grid to 9th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Williams Piquet 9 + Mansell 6 | Piquet 9 + Mansell 6 | 15 | |
| 2 | Ferrari Johansson 4 + Alboreto 0 | Johansson 4 + Alboreto 0 | 4 | |
| 3 | McLaren Rosberg 3 + Prost 0 | Rosberg 3 + Prost 0 | 3 | |
| 4 | Benetton Berger 2 + Fabi 0 | Berger 2 + Fabi 0 | 2 | |
| 5 | Lola Jones 1 + Tambay 0 | Jones 1 + Tambay 0 | 1 | |
| 6 | Arrows Boutsen 0 + Danner 0 | Boutsen 0 + Danner 0 | 0 | |
| 7 | Tyrrell Streiff 0 + Brundle 0 | Streiff 0 + Brundle 0 | 0 | |
| 8 | Osella Caffi 0 + Ghinzani 0 | Caffi 0 + Ghinzani 0 | 0 | |
| 9 | Minardi de Cesaris 0 + Nannini 0 | de Cesaris 0 + Nannini 0 | 0 | |
| 10 | AGS Capelli 0 | Capelli 0 | 0 | |
| 11 | Ligier Arnoux 0 + Alliot 0 | Arnoux 0 + Alliot 0 | 0 | |
| 12 | Zakspeed Palmer 0 + Rothengatter 0 | Palmer 0 + Rothengatter 0 | 0 | |
| 13 | Team Lotus Dumfries 0 + Senna 0 | Dumfries 0 + Senna 0 | 0 | |
| 14 | Brabham Warwick 0 + Patrese 0 | Warwick 0 + Patrese 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Nelson Piquet Williams | Williams | 1:17:42.889 | 51 | — | 9 | |
| 2 | Nigel Mansell Williams | Williams | +9.828s | 51 | — | 6 | |
| 3 | Stefan Johansson Ferrari | Ferrari | +22.915s | 51 | — | 4 | |
| 4 | Keke Rosberg McLaren | McLaren | +53.809s | 51 | — | 3 | |
| 5 | Gerhard Berger Benetton | Benetton | +1 Lap | 50 | — | 2 | |
| 6 | Alan Jones Lola | Lola | +2 Laps | 49 | — | 1 | |
| 7 | Thierry Boutsen Arrows | Arrows | +2 Laps | 49 | — | — | |
| 8 | Christian Danner Arrows | Arrows | +2 Laps | 49 | — | — | |
| 9 | Philippe Streiff Tyrrell | Tyrrell | +2 Laps | 49 | — | — | |
| 10 | Martin Brundle Tyrrell | Tyrrell | +2 Laps | 49 | — | — | |
| NC | Alex Caffi Osella | Osella | NC | 45 | — | — | |
| DNF | Teo Fabi Benetton | Benetton | DNF Puncture | 44 | — | — | |
| DNF | Michele Alboreto Ferrari | Ferrari | DNF Engine | 33 | — | — | |
| DNF | Andrea de Cesaris Minardi | Minardi | DNF Engine | 33 | — | — | |
| DNF | Ivan Capelli AGS | AGS | DNF Puncture | 31 | — | — | |
| DNF | René Arnoux Ligier | Ligier | DNF Gearbox | 30 | — | — | |
| DNF | Jonathan Palmer Zakspeed | Zakspeed | DNF Engine | 27 | — | — | |
| DSQ | Alain Prost McLaren | McLaren | DSQ | 27 | — | — | |
| DNF | Philippe Alliot Ligier | Ligier | DNF Engine | 22 | — | — | |
| DNF | Johnny Dumfries Team Lotus | Team Lotus | DNF Gearbox | 18 | — | — | |
| DNF | Derek Warwick Brabham | Brabham | DNF Spun off | 16 | — | — | |
| DNF | Alessandro Nannini Minardi | Minardi | DNF Electrical | 15 | — | — | |
| DNF | Piercarlo Ghinzani Osella | Osella | DNF Suspension | 12 | — | — | |
| DNF | Patrick Tambay Lola | Lola | DNF Accident | 2 | — | — | |
| DNF | Riccardo Patrese Brabham | Brabham | DNF Accident | 2 | — | — | |
| DNF | Huub Rothengatter Zakspeed | Zakspeed | DNF Engine | 1 | — | — | |
| DNF | Ayrton Senna Team Lotus | Team Lotus | DNF Transmission | 0 | — | — |