| Pos. | Driver | Entrant | Constructor | Time | Grid |
|---|---|---|---|---|---|
| 1 | Jo Siffert | Ecurie Filipinetti | Lotus-BRM | 2.06:25.4 | 1 |
| 2 | Carel Godin de Beaufort | Ecurie Maarsbergen | Porsche | + 1:20.6 s | 4 |
| 3 | Carlo Abate | Scuderia Centro Sud | Cooper-Maserati | + 1 Lap | 5 |
| 4 | Bob Anderson | DW Racing Enterprises | Lola-Climax | + 4 Laps | 2 |
| 5 | Jo Bonnier | Rob Walker Racing Team | Lotus-Climax | + 7 Laps | 3 |
| 6 | Gaetano Starrabba | Gaetano Starrabba | Lotus-Maserati | + 7 Laps | 10 |
| Ret | Günther Seiffert | Autosport Team Wolfgang Seidel | Lotus-BRM | Gearbox casing | 9 |
| Ret | Bernard Collomb | Bernard Collomb | Lotus-Climax | Front wishbone | 7 |
| Ret | Lorenzo Bandini | Scuderia Centro Sud | Cooper-Maserati | Oil pipe | 6 |
| Ret | André Wicky | André Wicky | Cooper-Climax | Engine | 8 |
| WD | Phil Hill | Ecurie Filipinetti | Lotus-BRM | Car not ready | - |
| WD | Jim Clark | Team Lotus | Lotus-Climax | - | |
| WD | Trevor Taylor | Team Lotus | Lotus-Climax | - | |
| WD | John Surtees | SEFAC Ferrari | Ferrari | Car not ready | - |
| WD | Nasif Estéfano | Scuderia Tomaso | De Tomaso | Car not ready | - |
Date: 25 April 1963
Official Name: XII Gran Premio di Siracusa
Circuit: Syracuse Circuit
Location: Syracuse, Sicily
Circuit Length: 5.612 km
Number of Laps: 56
Race Distance: 314.26 km
Pole Position: Jo Siffert, Lotus-BRM, 1:59.0
Fastest Lap: Jo Siffert, Lotus-BRM, 2:00.4