The 1986 San Marino Grand Prix was a Formula One motor race held at Imola on 27 April 1986. The race was the third round of the year's World Championship. As with the previous year's event, fuel consumption was a big issue, changing the points finishers in the closing laps. The Autodromo Dino Ferrari had received safety upgrades from the previous year, including slight track modifications after the Variante Alta chicane and extended runoff areas at the Rivazza complex.