| Country: | France |
| Grand Prix: | Pau |
| Date: | 10 April |
| Year: | 1938 |
| Official Name: | Grand Prix de Pau |
| Location: | Pau, France |
| Course: | Temporary Street Circuit |
| Course Mi: | 1.720 |
| Course Km: | 2.760 |
| Distance Laps: | 100 |
| Distance Mi: | 172.100 |
| Distance Km: | 276.960 |
| Pole Driver: | René Dreyfus |
| Pole Country: | FRA |
| Pole Team: | Delahaye 145 |
| Pole Time: | 1:48.0 |
| Fast Driver: | Rudolf Caracciola |
| Fast Team: | Mercedes-Benz W154 |
| Fast Time: | 1:47.0 |
| Fast Country: | Germany |
| Fast Flag Suffix: | 1935 |
| First Driver: | René Dreyfus |
| First Country: | FRA |
| First Team: | Delahaye 145 |
| Second Driver: | Rudolf Caracciola |
| Second Country: | Germany |
| Second Flag Suffix: | 1935 |
| Second Driver2: | Hermann Lang |
| Second Country2: | Germany |
| Second Flag Suffix2: | 1935 |
| Second Team: | Mercedes-Benz W154 |
| Third Driver: | Gianfranco Comotti |
| Third Country: | Italy |
| Third Flag Suffix: | 1861 |
| Third Team: | Delahaye 145 |
The 1938 Pau Grand Prix was a motor race held on 10 April 1938 at the Pau circuit, in Pau, Pyrénées-Atlantiques, France. The Grand Prix was won by René Dreyfus, driving the Delahaye 145. Rudolf Caracciola and Hermann Lang combined to finish second and Gianfranco Comotti finished third.
| Pos | No | Driver | Vehicle | Laps | Time/Retired | Grid | |
|---|---|---|---|---|---|---|---|
| 1 | 2 |  René Dreyfus | Delahaye 145 | 100 | 3hr 08min 59.0sec | 1 | |
| 2 | 6 |  Rudolf Caracciola Hermann Lang | Mercedes-Benz W154 | 100 | + 1:51.0 s | 2 | |
| 3 | 4 |  Gianfranco Comotti | Delahaye 145 | 94 | + 6 laps | 3 | |
| 4 | 20 | "Raph" | Maserati 6CM | 85 | + 15 laps | 8 | |
| 5 | 28 | Maurice Trintignant | Bugatti T35C | 83 | + 17 laps | 6 | |
| 6 | 24 | Dioscoride Lanza | Maserati 6CM | 81 | + 19 laps | 5 | |
| Ret | 30 | Yves Matra | Bugatti T51 | 40 | Retired | 7 | |
| Ret | 22 | Antonio Negro | Maserati 6CM | 9 | Steering | 9 | |
| DNS | 8 | Hermann Lang | Mercedes-Benz W154 | Did Not Start | |||
| DNS | 12 | Tazio Nuvolari | Alfa Romeo Tipo 308 | Did Not Start | |||
| DNS | 14 | Emilio Villoresi | Alfa Romeo Tipo 308 | Did Not Start | |||
| Sources: [1] | |||||||