1984 Grande Prémio de Portugal
| Date | 21.10.1984 | Category | Formula 1 |
| Circuit | Autodromo do Estoril | Championship | Formula 1 World Championship |
| Race title | Grande Premio de Portugal | Round | 16 |
| Distance | 70 laps = 304.5 km | Country | Portugal |
Winner's speed: 180.540 kmh
Pole's speed: 191.669 kmh
Fastest lap speed: 188.683 kmh
| Rank | Pos. | # | Driver | Entrant | Car | Laps | Laps lead | Time | Status | Pts | FL time | FL rank | Grid | Row | Qual time |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 1 | 7 | Alain Prost | Marlboro McLaren International | McLaren MP4/2 TAG 1.5 V6T | 70 | 62 | 1:41'11.753 | finished | 9 | 1'23.452 | 2 | 2 | 1 | 1'21.774 |
| 22 | 6 | Keke Rosberg | Williams Grand Prix Engineering | Williams FW09B Honda 1.5 V6T | 39 | 8 | 57'01.219 | DNF, engine | 1'25.667 | 11 | 4 | 2 | 1'22.049 |