1981 Gran Premio di San Marino
3 May - Imola: 302.400 km (5.040 km x 60 laps)
Pole position: Gilles Villeneuve, Ferrari, 1:34.523

Results:
 1 Nelson Piquet                Brabham-Cosworth        1:51:23.970, 162.873kph
 2 Riccardo Patrese             Arrows-Cosworth         1:51:28.550
 3 Carlos Reutemann             Williams-Cosworth       1:51:30.310
 4 Hector Rebaque               Brabham-Cosworth        1:51:46.860
 5 Didier Pironi                Ferrari                 1:51:49.840
 6 Andrea de Cesaris            McLaren-Cosworth        1:52:30.580
 7 Gilles Villeneuve            Ferrari                 1:53:05.940
 8 Rene Arnoux                  Renault                 -1 lap
 9 Marc Surer                   Ensign-Cosworth         -1 lap
10 John Watson                  McLaren-Cosworth        -2 laps
11 Patrick Tambay               Theodore-Cosworth       -2 laps
12 Alan Jones                   Williams-Cosworth       -2 laps
13 Slim Borgudd                 ATS-Cosworth            -3 laps
14 Jean-Pierre Jabouille        Talbot Ligier-Matra     -15 laps/not classified

Fastest Lap: Gilles Villeneuve, Ferrari, 1:48.064, 167.901kph

Retirements:
   Miguel-Angel Guerra          Osella-Cosworth          0 laps Accident
   Alain Prost                  Renault                  3 laps Gearbox
   Jacques Laffite              Talbot Ligier-Matra      7 laps Accident
   Keke Rosberg                 Fittipaldi-Cosworth     14 laps Engine
   Mario Andretti               Alfa Romeo              26 laps Gearbox
   Eddie Cheever                Tyrrell-Cosworth        28 laps Accident
   Bruno Giacomelli             Alfa Romeo              28 laps Accident
   Beppe Gabbiani               Osella-Cosworth         31 laps Accident
   Michele Alboreto             Tyrrell-Cosworth        31 laps Accident
   Eliseo Salazar               March-Cosworth          38 laps Oil pressure

Did Not Qualify
   Siegfried Stohr              Arrows-Cosworth
   Derek Daly                   March-Cosworth
   Jan Lammers                  ATS-Cosworth
   Chico Serra                  Fittipaldi-Cosworth
   Derek Warwick                Toleman-Hart
   Brian Henton                 Toleman-Hart
---------------------------------------------------------------------------------------
                    Starting Grid

   Gilles Villeneuve                    Carlos Reutemann
   Ferrari 126CK                        Williams FW07C-Cosworth #12
   1:34.523                             1:35.229

   Rene Arnoux                          Alain Prost
   Renault RE20B                        Renault RE20B
   1:35.281                             1:35.579

   Nelson Piquet                        Didier Pironi
   Brabham BT49C-Cosworth #11           Ferrari 126CK #051
   1:35.733                             1:35.868

   John Watson                          Alan Jones
   McLaren MP4-Cosworth                 Williams FW07C-Cosworth
   1:36.241                             1:36.280

   Riccardo Patrese                     Jacques Laffite
   Arrows A3-Cosworth #5                Talbot Ligier JS17-Matra
   1:36.390                             1:36.477

   Bruno Giacomelli                     Mario Andretti
   Alfa Romeo 179C                      Alfa Romeo 179C
   1:36.776                             1:36.919
   
   Hector Rebaque                       Andrea de Cesaris
   Brabham BT49C-Cosworth #12           McLaren M29F-Cosworth #4
   1:37.264                             1:37.382

   Keke Rosberg                         Patrick Tambay
   Fittipaldi F8C-Cosworth              Theodore TY01-Cosworth
   1:37.459                             1:37.545

   Michele Alboreto                     Jean-Pierre Jabouille
   Tyrrell 010-Cosworth                 Talbot Ligier JS17-Matra
   1:37.771                             1:38.140

   Eddie Cheever                        Beppe Gabbiani
   Tyrrell 010-Cosworth                 Osella FA1B-Cosworth
   1:38.266                             1:38.302

   Marc Surer                           Miguel Angel Guerra
   Ensign N180B-Cosworth                Osella FA1B-Cosworth
   1:38.340                             1:38.773

   Eliseo Salazar                       Slim Borgudd
   March 811-Cosworth                   ATS D4-Cosworth
   1:38.827                             1:39.079


Did Not Qualify:
   
   Siegfried Stohr                      Derek Daly
   Arrows A3-Cosworth                   March 811-Cosworth
   1:39.112                             1:39.157

   Jan Lammers                          Chico Serra
   ATS D4-Cosworth                      Fittipaldi F8C-Cosworth
   1:39.419                             1:41.114

   Derek Warwick                        Brian Henton
   Toleman TG181-Hart                   Toleman TG181-Hart
   1:43.187                             1:49.951