The 1981 San Marino Grand Prix was a Formula One motor race held at Imola on 3 May 1981. It was the fourth race of the 1981 Formula One World Championship. Round 4 of 15 · 1981 Formula One World Championship May 3, 1981 Autodromo Enzo E Dino Ferrari, Rome, Italy Podium: 1. Nelson Piquet Souto Maior · 2. Riccardo Patrese · 3. Carlos Reutemann Wiki link