Round 4 of 15 · Imola · 3 May 1981, Sunday
San Marino Grand Prix
Key highlights
Villeneuve
pole position
60
laps
13
finishers out of 25
| Pos | Driver | Team | Time / Gap | Pts |
|---|---|---|---|---|
| 1 | Nelson Piquet | Brabham | 1:51:23.97 | 9 |
| 2 | Riccardo Patrese | Arrows | +4.58 | 6 |
| 3 | Carlos Reutemann | Williams | +6.34 | 4 |
| 4 | Hector Rebaque | Brabham | +22.89 | 3 |
| 5 | Didier Pironi | Ferrari | +25.87 | 2 |
| 6 | Andrea de Cesaris | McLaren | +1:06.61 | 1 |
| 7 | Gilles Villeneuve | Ferrari | +1:41.97 | |
| 8 | René Arnoux | Renault | +1 Lap | |
| 9 | Marc Surer | Ensign | +1 Lap | |
| 10 | John Watson | McLaren | +2 Laps | |
| 11 | Patrick Tambay | Theodore | +2 Laps | |
| 12 | Alan Jones | Williams | +2 Laps | |
| 13 | Slim Borgudd | ATS | +3 Laps | |
| NC | Jean-Pierre Jabouille | Ligier | Not classified | |
| DNF | Eliseo Salazar | March | Spun off | |
| DNF | Michele Alboreto | Tyrrell | Collision | |
| DNF | Beppe Gabbiani | Osella | Collision | |
| DNF | Bruno Giacomelli | Alfa Romeo | Collision | |
| DNF | Eddie Cheever | Tyrrell | Collision | |
| DNF | Mario Andretti | Alfa Romeo | Gearbox | |
| DNF | Keke Rosberg | Fittipaldi | Engine | |
| DNF | Jacques Laffite | Ligier | Suspension | |
| DNF | Alain Prost | Renault | Gearbox | |
| DNF | Miguel Ángel Guerra | Osella | Accident | |
| DNQ | Siegfried Stohr | Arrows | Did not qualify | |
| DNQ | Derek Daly | March | Did not qualify | |
| DNF | Jan Lammers | ATS | Retired | |
| DNQ | Chico Serra | Fittipaldi | Did not qualify | |
| DNQ | Derek Warwick | Toleman | Did not qualify | |
| DNQ | Brian Henton | Toleman | Did not qualify | |
| WD | Elio de Angelis | Team Lotus | Withdrew | |
| WD | Nigel Mansell | Team Lotus | Withdrew |
- DNF
- Did not finish
- NC
- Not classified
- DNQ
- Did not qualify
- WD
- Withdrew