Autodromo Enzo e Dino Ferrari · 13 May 1990
Riccardo Patrese won the 1990 San Marino Grand Prix for Williams from 3rd on the grid, 5.117s ahead of Gerhard Berger. Paolo Barilla gained the most places, from 26th on the grid to 11th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | Williams Patrese 9 + Boutsen 0 | Patrese 9 + Boutsen 0 | 9 | |
| 2 | McLaren Berger 6 + Senna 0 | Berger 6 + Senna 0 | 6 | |
| 3 | Benetton Nannini 4 + Piquet 2 | Nannini 4 + Piquet 2 | 6 | |
| 4 | Ferrari Prost 3 + Mansell 0 | Prost 3 + Mansell 0 | 3 | |
| 5 | Tyrrell Alesi 1 + Nakajima 0 | Alesi 1 + Nakajima 0 | 1 | |
| 6 | Team Lotus Warwick 0 + Donnelly 0 | Warwick 0 + Donnelly 0 | 0 | |
| 7 | Ligier Alliot 0 + Larini 0 | Alliot 0 + Larini 0 | 0 | |
| 8 | Minardi Barilla 0 + Martini 0 | Barilla 0 + Martini 0 | 0 | |
| 9 | Onyx Järvilehto 0 + Foitek 0 | Järvilehto 0 + Foitek 0 | 0 | |
| 10 | Larrousse Bernard 0 + Suzuki 0 | Bernard 0 + Suzuki 0 | 0 | |
| 11 | Osella Grouillard 0 | Grouillard 0 | 0 | |
| 12 | Brabham Modena 0 | Modena 0 | 0 | |
| 13 | Dallara de Cesaris 0 + Pirro 0 | de Cesaris 0 + Pirro 0 | 0 | |
| 14 | Leyton House Gugelmin 0 + Capelli 0 | Gugelmin 0 + Capelli 0 | 0 | |
| 15 | Euro Brun Moreno 0 | Moreno 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Riccardo Patrese Williams | Williams | 1:30:55.478 | 61 | — | 9 | |
| 2 | Gerhard Berger McLaren | McLaren | +5.117s | 61 | — | 6 | |
| 3 | Alessandro Nannini Benetton | Benetton | +6.240s | 61 | — | 4 | |
| 4 | Alain Prost Ferrari | Ferrari | +6.843s | 61 | — | 3 | |
| 5 | Nelson Piquet Benetton | Benetton | +53.112s | 61 | — | 2 | |
| 6 | Jean Alesi Tyrrell | Tyrrell | +1 Lap | 60 | — | 1 | |
| 7 | Derek Warwick Team Lotus | Team Lotus | +1 Lap | 60 | — | — | |
| 8 | Martin Donnelly Team Lotus | Team Lotus | +1 Lap | 60 | — | — | |
| 9 | Philippe Alliot Ligier | Ligier | +1 Lap | 60 | — | — | |
| 10 | Nicola Larini Ligier | Ligier | +2 Laps | 59 | — | — | |
| 11 | Paolo Barilla Minardi | Minardi | +2 Laps | 59 | — | — | |
| 12 | Jyrki Järvilehto Onyx | Onyx | +2 Laps | 59 | — | — | |
| 13 | Éric Bernard Larrousse | Larrousse | DNF Clutch | 56 | — | — | |
| DNF | Olivier Grouillard Osella | Osella | DNF Wheel | 52 | — | — | |
| DNF | Nigel Mansell Ferrari | Ferrari | DNF Engine | 38 | — | — | |
| DNF | Gregor Foitek Onyx | Onyx | DNF Engine | 35 | — | — | |
| DNF | Stefano Modena Brabham | Brabham | DNF Brakes | 31 | — | — | |
| DNF | Andrea de Cesaris Dallara | Dallara | DNF Wheel | 29 | — | — | |
| DNF | Maurício Gugelmin Leyton House | Leyton House | DNF Electrical | 24 | — | — | |
| DNF | Thierry Boutsen Williams | Williams | DNF Engine | 17 | — | — | |
| DNF | Aguri Suzuki Larrousse | Larrousse | DNF Clutch | 17 | — | — | |
| DNF | Ayrton Senna McLaren | McLaren | DNF Wheel | 3 | — | — | |
| DNF | Emanuele Pirro Dallara | Dallara | DNF Spun off | 2 | — | — | |
| DNF | Ivan Capelli Leyton House | Leyton House | DNF Collision | 0 | — | — | |
| DNF | Satoru Nakajima Tyrrell | Tyrrell | DNF Collision | 0 | — | — | |
| DNF | Roberto Moreno Euro Brun | Euro Brun | DNF Throttle | 0 | — | — | |
| DNS | Pierluigi Martini Minardi | Minardi | DNS Accident | 0 | — | — |