Race Result
| GP n. 48 - 11/09/1955 - Grand Prix of Italy Autodromo Nationale di Monza |
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| Winner: | Juan Manuel Fangio / Mercedes - 2:25'04.4 | ||||||
| Pole Position: | Juan Manuel Fangio / Mercedes - 2:46.5 | ||||||
| Fastest Lap: | Stirling Moss / Mercedes - 2:46.9 | ||||||
| Pos | Nš | Driver | Constructor | Laps | Time/Retired | Grid | Points |
| 1 | 18 |  Juan Manuel Fangio |
Mercedes | 50 | 2:25'04.4 | 1 | 8 |
| 2 | 14 |  Piero Taruffi |
Mercedes | 50 | + 0.7 | 9 | 6 |
| 3 | 4 | Eugenio Castellotti |
Ferrari | 50 | + 46.2 | 4 | 4 |
| 4 | 36 |  Jean Behra |
Maserati | 50 | + 3'57.5 | 6 | 3 |
| 5 | 34 | Carlos Menditeguy |
Maserati | 49 | + 1 lap | 16 | 2 |
| 6 | 12 | Umberto Maglioli |
Ferrari | 49 | + 1 lap | 12 | 0 |
| 7 | 28 | Roberto Mieres |
Maserati | 48 | + 2 laps | 7 | 0 |
| 8 | 8 | Maurice Trintignant |
Ferrari | 47 | + 3 laps | 15 | 0 |
| 9 | 40 |  John Fitch |
Maserati | 46 | + 4 laps | 20 | 0 |
| 10 | 6 |  Mike Hawthorn |
Ferrari | 38 | gearbox | 14 | 0 |
| Ret | 20 |  Karl Kling |
Mercedes | 32 | gearbox | 3 | 0 |
| Ret | 30 | Luigi Musso |
Maserati | 31 | gearbox | 10 | 0 |
| Ret | 38 | Horace Gould |
Maserati | 31 | suspension | 21 | 0 |
| Ret | 16 | Stirling Moss |
Mercedes | 27 | engine | 2 | 1 |
| Ret | 26 | Jacques Pollet |
Gordini | 26 | engine | 19 | 0 |
| Ret | 22 |  Hermano da Silva Ramos |
Gordini | 23 | fuel system | 18 | 0 |
| Ret | 32 | Peter Collins |
Maserati | 22 | suspension | 11 | 0 |
| Ret | 24 | Jean Lucas |
Gordini | 7 | engine | 22 | 0 |
| Ret | 42 | Harry Schell |
Vanwall | 7 | suspension | 13 | 0 |
| Ret | 44 | Ken Wharton |
Vanwall | 0 | injection | 17 | 0 |
| Dns | 2 | Nino Farina |
Ferrari | did not start | 5 | 0 | |
| Dns | 10 | Luigi Villoresi |
Ferrari | did not start | 8 | 0 | |