The 1990 Portuguese Grand Prix was a Formula One motor race held on 23 September 1990 at Autódromo do Estoril. It was the thirteenth race of the 1990 FIA Formula One World Championship. The race was the 19th Portuguese Grand Prix and the seventh to be held at Estoril. It was scheduled to be held over 71 laps of the 4.35-kilometre (2.70 mi) circuit but was stopped after 61 laps, a race distance of 265.35 kilometres (164.88 mi), after an accident involving the Arrows of Alex Caffi and the Lola of Aguri Suzuki.