| Type: | EC |
| Grand Prix: | Italian |
| Date: | 12 September |
| Year: | 1937 |
| Official Name: | XV Gran Premio d'Italia |
| Country: | Italy |
| Flag Suffix: | 1861 |
| Race No: | 5 |
| Season No: | 5 |
| Previous Round: | 1937 Swiss Grand Prix |
| Location: | Circuito del Montenero Livorno, Italy |
| Course Mi: | 4.485 |
| Course Km: | 7.218 |
| Distance Laps: | 50 |
| Distance Mi: | 224.25 |
| Distance Km: | 360.90 |
| Pole Driver: | Rudolf Caracciola |
| Pole Team: | Mercedes-Benz |
| Pole Country: | Germany |
| Pole Flag Suffix: | Nazi |
| Pole Time: | 3:11.0 |
| Fast Driver: | Rudolf Caracciola |
| Fast Team: | Mercedes-Benz |
| Fast Time: | 3:11 |
| Fast Country: | Germany |
| Fast Flag Suffix: | Nazi |
| Fast Driver2: | Hermann Lang |
| Fast Team2: | Mercedes-Benz |
| Fast Country2: | Germany |
| Fast Flag Suffix2: | Nazi |
| First Driver: | Rudolf Caracciola |
| First Team: | Mercedes-Benz |
| First Country: | Germany |
| First Flag Suffix: | Nazi |
| Second Driver: | Hermann Lang |
| Second Team: | Mercedes-Benz |
| Second Country: | Germany |
| Second Flag Suffix: | Nazi |
| Third Driver: | Bernd Rosemeyer |
| Third Team: | Auto Union |
| Third Country: | Germany |
| Third Flag Suffix: | Nazi |
The 1937 Italian Grand Prix was a "750 kg Formula" Grand Prix race held on 12 September 1937 at the Montenero Circuit in Livorno.
Caracciola took an early lead from pole, Lang was second but he soon took the lead from Caracciola, the two Mercedes drivers pushing each other hard. Team manager Alfred Neubauer was not impressed by the internal fighting. The partisan crowd were disappointed when the Italian Nuvolari retired and gave his car to Farina.
Von Brauchitsch and Kautz were out, the two leading Mercedes had a fierce fight to the flag with Caracciola blocking any attempt to pass by Lang. Rosemeyer couldn't match their pace and Caracciola held on for a win with Lang just 0.4s behind him at the flag.
| Pos | No | Driver | Team | Car | Laps | Time/Retired | Grid | Points | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | 2 |  Rudolf Caracciola | Daimler-Benz AG | Mercedes-Benz W125 | 50 | 2:44:54.4 | 1 | 1 | |
| 2 | 6 | Hermann Lang | Daimler-Benz AG | Mercedes-Benz W125 | 50 | + 0.4 | 4 | 2 | |
| 3 | 12 | Bernd Rosemeyer | Auto Union | Auto Union C | 50 | + 2:25.4 | 3 | 3 | |
| 4 | 8 |  Richard Seaman | Daimler-Benz AG | Mercedes-Benz W125 | 49 | + 1 Lap | 8 | 4 | |
| 5 | 18 | Hermann Paul Müller | Auto Union | Auto Union C | 49 | + 1 Lap | 10 | 4 | |
| 6 | 14 |  Achille Varzi | Auto Union | Auto Union C | 49 | + 1 Lap | 2 | 4 | |
| 7 | 22 | Tazio Nuvolari | Scuderia Ferrari | Alfa Romeo 12C-36 | 49 | + 1 Lap | 7 | 4 | |
| Giuseppe Farina | n/a | ||||||||
| 8 | 26 | Carlo Felice Trossi | Scuderia Ferrari | Alfa Romeo 12C-36 | 47 | + 3 Laps | 9 | 4 | |
| 9 | 16 | Hans Stuck | Auto Union | Auto Union C | 47 | + 3 Laps | 5 | 4 | |
| Rudolf Hasse | n/a | ||||||||
| 10 | 20 | Vittorio Belmondo | Private entry | Alfa Romeo C | 45 | + 5 Laps | 15 | 4 | |
| DNF | 10 |  Christian Kautz | Daimler-Benz AG | Mercedes-Benz W125 | 43 | 14 | 4 | ||
| DNF | 28 | Clemente Biondetti | Private entry | Alfa Romeo C | 38 | 13 | 4 | ||
| DNF | 4 | Manfred von Brauchitsch | Daimler-Benz AG | Mercedes-Benz W125 | 36 | Mechanical | 6 | 5 | |
| DNF | 30 | Giovanbattista Guidotti | Alfa Corse | Alfa Romeo 12C-37 | 24 | Mechanical | 11 | 6 | |
| DNF | 24 | Giuseppe Farina | Scuderia Ferrari | Alfa Romeo 12C-36 | 13 | Mechanical | 12 | 6 | |