| «1984-16» | Portugal Grand Prix - XIII Grande Premio de Portugal |
| 1984-10-21 | Estoril - Autódromo Fernanda Pires da Silva - 70 laps × 4.35 km : 304.5 km |
| Pos | Qualy | Car | Driver | Constructor |
|---|---|---|---|---|
| 1 | 1 | 1 | Nelson Piquet | Brabham • BMW |
| 2 | 2 | 7 | Alain Prost | McLaren • TAG Porsche |
| 3 | 3 | 19 | Ayrton Senna | Toleman • Hart |
| 4 | 4 | 6 | Keke Rosberg | Williams • Honda |
| 5 | 5 | 11 | Elio de Angelis | Lotus • Renault |
| 6 | 6 | 12 | Nigel Mansell | Lotus • Renault |
| 7 | 7 | 15 | Patrick Tambay | Renault |
| 8 | 8 | 27 | Michele Alboreto | Ferrari |
| 9 | 9 | 16 | Derek Warwick | Renault |
| 10 | 10 | 20 | Stefan Johansson | Toleman • Hart |
| 11 | 11 | 8 | Niki Lauda | McLaren • TAG Porsche |
| 12 | 12 | 22 | Riccardo Patrese | Alfa Romeo |
| 13 | 13 | 33 | Philippe Streiff | Renault |
| 14 | 14 | 23 | Eddie Cheever | Alfa Romeo |
| 15 | 15 | 5 | Jacques Laffite | Williams • Honda |
| 16 | 16 | 17 | Marc Surer | Arrows • BMW |
| 17 | 17 | 28 | René Arnoux | Ferrari |
| 18 | 18 | 18 | Thierry Boutsen | Arrows • BMW |
| 19 | 19 | 2 | Manfred Winkelhock | Brabham • BMW |
| 20 | 20 | 26 | Andrea de Cesaris | Ligier • Renault |
| 21 | 21 | 25 | François Hesnault | Ligier • Renault |
| 22 | 22 | 24 | Piercarlo Ghinzani | Osella • Alfa Romeo |
| 23 | 23 | 14 | Gerhard Berger | ATS • BMW |
| 24 | 24 | 30 | Jo Gartner | Osella • Alfa Romeo |
| 25 | 25 | 21 | Mauro Baldi | Spirit • Hart |
| 26 | 26 | 10 | Jonathan Palmer | RAM • Hart |
| 27 | 27 | 9 | Philippe Alliot | RAM • Hart |