| Pos. | No. | Driver | Entrant | Constructor | Time | Grid |
|---|---|---|---|---|---|---|
| 1 | 6 | Alberto Ascari | Scuderia Lancia | Lancia D50 | 2:13:03.6 | 1 |
| 2 | 16 | Luigi Musso | Officine Alfieri Maserati | Maserati 250F | 2:14:20.6 (+77.0s) | 2 |
| 3 | 12 | Luigi Villoresi | Scuderia Lancia | Lancia D50 | 59 laps | 4 |
| 4 | 2 | Jean Behra | Officine Alfieri Maserati | Maserati 250F | 55 laps | 3 |
| 5 | 8 | Giorgio Scarlatti | Giorgio Scarlatti | Ferrari 500 | 54 laps | 6 |
| 6 | 4 | Berardo Taraschi | Berardo Taraschi | Ferrari 166 | 53 laps | 7 |
| 7 | 14 | Ottorino Volonterio | Ottorino Volonterio | Maserati A6GCM | 47 laps | 9 |
| Ret | 10 | Roberto Mieres | Officine Alfieri Maserati | Maserati 250F | 23 laps - oil leak | 5 |
| Ret | 18 | Ted Whiteaway | E.N. Whiteaway | HWM-Alta | 17 laps - engine | 8 |
Date: 8 May 1955
Official Name: VIII Gran Premio di Napoli
Circuit: Posillipo Circuit
Location: Posillipo, Naples
Circuit Length: 4.10 km
Number of Laps: 60
Race Distance: 246.00 km
Pole Position: Alberto Ascari, Lancia, 2:08.1
Fastest Lap: Jean Behra, Maserati, 2:09.4