Autodromo Enzo e Dino Ferrari · 23 April 1989
Ayrton Senna won the 1989 San Marino Grand Prix for McLaren from 1st on the grid, 40.225s ahead of Alain Prost. Jonathan Palmer gained the most places, from 25th on the grid to 6th.
| Pos | Team | Points Breakdown | Pts | |
|---|---|---|---|---|
| 1 | McLaren Senna 9 + Prost 6 | Senna 9 + Prost 6 | 15 | |
| 2 | Benetton Nannini 4 + Herbert 0 | Nannini 4 + Herbert 0 | 4 | |
| 3 | Williams Boutsen 3 + Patrese 0 | Boutsen 3 + Patrese 0 | 3 | |
| 4 | Arrows Warwick 2 + Cheever 0 | Warwick 2 + Cheever 0 | 2 | |
| 5 | Tyrrell Palmer 1 | Palmer 1 | 1 | |
| 6 | Dallara Caffi 0 + de Cesaris 0 | Caffi 0 + de Cesaris 0 | 0 | |
| 7 | AGS Tarquini 0 | Tarquini 0 | 0 | |
| 8 | Osella Larini 0 | Larini 0 | 0 | |
| 9 | Brabham Brundle 0 + Modena 0 | Brundle 0 + Modena 0 | 0 | |
| 10 | Team Lotus Nakajima 0 + Piquet 0 | Nakajima 0 + Piquet 0 | 0 | |
| 11 | Minardi Pérez-Sala 0 + Martini 0 | Pérez-Sala 0 + Martini 0 | 0 | |
| 12 | March Gugelmin 0 + Capelli 0 | Gugelmin 0 + Capelli 0 | 0 | |
| 13 | Ferrari Mansell 0 + Berger 0 | Mansell 0 + Berger 0 | 0 | |
| 14 | Ligier Grouillard 0 | Grouillard 0 | 0 | |
| 15 | Lola Alliot 0 + Dalmas 0 | Alliot 0 + Dalmas 0 | 0 |
| Pos | Driver | Team | Race time / Gap | Laps | Stops | Pts | |
|---|---|---|---|---|---|---|---|
| 1 | Ayrton Senna McLaren | McLaren | 1:26:51.245 | 58 | — | 9 | |
| 2 | Alain Prost McLaren | McLaren | +40.225s | 58 | — | 6 | |
| 3 | Alessandro Nannini Benetton | Benetton | +1 Lap | 57 | — | 4 | |
| 4 | Thierry Boutsen Williams | Williams | +1 Lap | 57 | — | 3 | |
| 5 | Derek Warwick Arrows | Arrows | +1 Lap | 57 | — | 2 | |
| 6 | Jonathan Palmer Tyrrell | Tyrrell | +1 Lap | 57 | — | 1 | |
| 7 | Alex Caffi Dallara | Dallara | +1 Lap | 57 | — | — | |
| 8 | Gabriele Tarquini AGS | AGS | +1 Lap | 57 | — | — | |
| 9 | Eddie Cheever Arrows | Arrows | +2 Laps | 56 | — | — | |
| 10 | Andrea de Cesaris Dallara | Dallara | +2 Laps | 56 | — | — | |
| 11 | Johnny Herbert Benetton | Benetton | +2 Laps | 56 | — | — | |
| 12 | Nicola Larini Osella | Osella | DNF Spun off | 52 | — | — | |
| DNF | Martin Brundle Brabham | Brabham | DNF Fuel system | 51 | — | — | |
| NC | Satoru Nakajima Team Lotus | Team Lotus | NC | 46 | — | — | |
| DNF | Luis Pérez-Sala Minardi | Minardi | DNF Spun off | 43 | — | — | |
| DNF | Maurício Gugelmin March | March | DNF Transmission | 39 | — | — | |
| DNF | Nelson Piquet Team Lotus | Team Lotus | DNF Engine | 29 | — | — | |
| DNF | Nigel Mansell Ferrari | Ferrari | DNF Gearbox | 23 | — | — | |
| DNF | Riccardo Patrese Williams | Williams | DNF Engine | 21 | — | — | |
| DNF | Stefano Modena Brabham | Brabham | DNF Spun off | 19 | — | — | |
| DNF | Pierluigi Martini Minardi | Minardi | DNF Gearbox | 6 | — | — | |
| DSQ | Olivier Grouillard Ligier | Ligier | DSQ | 4 | — | — | |
| DNF | Gerhard Berger Ferrari | Ferrari | DNF Accident | 3 | — | — | |
| DNF | Ivan Capelli March | March | DNF Spun off | 1 | — | — | |
| DNF | Philippe Alliot Lola | Lola | DNF Electrical | 0 | — | — | |
| DNF | Yannick Dalmas Lola | Lola | DNF Electrical | 0 | — | — |