Grande Prêmio de Portugal 1984
Etapa 16 da temporada 1984 da Fórmula 1, disputada em 21 de outubro de 1984.
Circuito: Autódromo do Estoril
Alain Prost venceu pela McLaren. Pole position: Nelson Piquet.
Resultado final
| Pos. | Piloto | Equipe | Grid | Voltas | Tempo | Pontos |
|---|---|---|---|---|---|---|
| 1 | Alain Prost | McLaren | 2 | 70 | 1:41:11.753 | 9 |
| 2 | Niki Lauda | McLaren | 11 | 70 | +13.425 | 6 |
| 3 | Ayrton Senna | Toleman | 3 | 70 | +20.042 | 4 |
| 4 | Michele Alboreto | Ferrari | 8 | 70 | +20.317 | 3 |
| 5 | Elio de Angelis | Team Lotus | 5 | 70 | +1:32.169 | 2 |
| 6 | Nelson Piquet | Brabham | 1 | 69 | +1 Lap | 1 |
| 7 | Patrick Tambay | Renault | 7 | 69 | +1 Lap | 0 |
| 8 | Riccardo Patrese | Alfa Romeo | 12 | 69 | +1 Lap | 0 |
| 9 | René Arnoux | Ferrari | 17 | 69 | +1 Lap | 0 |
| 10 | Manfred Winkelhock | Brabham | 19 | 69 | +1 Lap | 0 |
| 11 | Stefan Johansson | Toleman | 10 | 69 | +1 Lap | 0 |
| 12 | Andrea de Cesaris | Ligier | 20 | 69 | +1 Lap | 0 |
| 13 | Gerhard Berger | ATS | 23 | 68 | +2 Laps | 0 |
| 14 | Jacques Laffite | Williams | 15 | 67 | +3 Laps | 0 |
| 15 | Mauro Baldi | Spirit | 25 | 66 | +4 Laps | 0 |
| 16 | Jo Gartner | Osella | 24 | 65 | Out of fuel | 0 |
| 17 | Eddie Cheever | Alfa Romeo | 14 | 64 | +6 Laps | 0 |
| R | Piercarlo Ghinzani | Osella | 22 | 60 | Engine | 0 |
| R | Nigel Mansell | Team Lotus | 6 | 52 | Spun off | 0 |
| R | Derek Warwick | Renault | 9 | 51 | Gearbox | 0 |
| R | Philippe Streiff | Renault | 13 | 48 | Transmission | 0 |
| R | Keke Rosberg | Williams | 4 | 39 | Engine | 0 |
| R | François Hesnault | Ligier | 21 | 31 | Electrical | 0 |
| R | Thierry Boutsen | Arrows | 18 | 24 | Transmission | 0 |
| R | Jonathan Palmer | RAM | 26 | 19 | Gearbox | 0 |
| R | Marc Surer | Arrows | 16 | 8 | Electrical | 0 |
| R | Philippe Alliot | RAM | 27 | 2 | Engine | 0 |
← Corrida anterior: Grande Prêmio da Europa