Juan Fangio won the Belgian Grand Prix 1955 at Circuit de Spa-Francorchamps on 5 June 1955, starting from P2 on the grid. Stirling Moss finished second for Mercedes, with Nino Farina completing the podium for Ferrari.
| Pos | Grid | Driver | Team | Laps | Time / Status | Pts | FL |
|---|---|---|---|---|---|---|---|
| 1 | 2 | Juan FangioFAN | Mercedes | 36 | 2:39:29.0 | 9 | |
| 2 | 3 | Stirling MossMOS | Mercedes | 36 | +8.1 | 6 | |
| 3 | 4 | Nino FarinaFAR | Ferrari | 36 | +1:40.5 | 4 | |
| 4 | 8 | Paul FrèreFRR | Ferrari | 36 | +3:25.5 | 3 | |
| 5 | 13 | Roberto MieresMIE | Maserati | 35 | +1 Lap | 1 | |
| 5 | 13 | Jean BehraBEH | Maserati | 35 | +1 Lap | 1 | |
| 6 | 10 | Maurice TrintignantTRI | Ferrari | 35 | +1 Lap | 0 | |
| 7 | 7 | Luigi MussoMUS | Maserati | 34 | +2 Laps | 0 | |
| 8 | 11 | Cesare PerdisaPER | Maserati | 33 | +3 Laps | 0 | |
| 9 | 12 | Louis RosierROS | Maserati | 33 | +3 Laps | 0 | |
| R | 6 | Karl KlingKLI | Mercedes | 21 | Oil leak | 0 | |
| R | 1 | Eugenio CastellottiCAS | Lancia | 16 | Gearbox | 0 | |
| R | 9 | Mike HawthornHAW | Vanwall | 8 | Gearbox | 0 | |
| R | 5 | Jean BehraBEH | Maserati | 3 | Spun off | 0 | |
| W | 0 | Johnny ClaesCLA | Maserati | 0 | Withdrew | 0 | |
| W | 0 | Piero TaruffiTAR | Ferrari | 0 | Withdrew | 0 | |
| W | 0 | Harry SchellSCH | Ferrari | 0 | Withdrew | 0 |