Stirling Moss won the Portuguese Grand Prix 1959 at Monsanto Park Circuit on 23 August 1959, starting from pole position. Masten Gregory finished second for Cooper-Climax, with Dan Gurney completing the podium for Ferrari.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 1 | Stirling MossMOS | Cooper-Climax | 62 | 2:11:55.41 | 9 | |
| 2 | 3 | Masten GregoryGRE | Cooper-Climax | 61 | +1 Lap | 6 | |
| 3 | 6 | Dan GurneyGUR | Ferrari | 61 | +1 Lap | 4 | |
| 4 | 4 | Maurice TrintignantTRI | Cooper-Climax | 60 | +2 Laps | 3 | |
| 5 | 9 | Harry SchellSCH | BRM | 59 | +3 Laps | 2 | |
| 6 | 12 | Roy SalvadoriSAL | Aston Martin | 59 | +3 Laps | 0 | |
| 7 | 11 | Ron FlockhartFLO | BRM | 59 | +3 Laps | 0 | |
| 8 | 13 | Carroll ShelbySHE | Aston Martin | 58 | +4 Laps | 0 | |
| 9 | 10 | Tony BrooksBRO | Ferrari | 57 | +5 Laps | 0 | |
| 10 | 14 | Mário de Araújo CabralCAB | Cooper-Maserati | 56 | +6 Laps | 0 | |
| R | 8 | Bruce McLarenMCL | Cooper-Climax | 38 | Transmission | 0 | |
| R | 2 | Jack BrabhamBRA | Cooper-Climax | 23 | Transmission | 0 | |
| R | 5 | Jo BonnierBON | BRM | 10 | Engine | 0 | |
| R | 7 | Phil HillHIL | Ferrari | 5 | Accident | 0 | |
| R | 15 | Graham HillHIL | Team Lotus | 5 | Accident | 0 | |
| R | 16 | Innes IrelandIRE | Team Lotus | 3 | Gearbox | 0 |