| 1938 motorsport champions | |
| Previous: 1937 | Next: 1939 |
This list of 1938 motorsport champions is a list of national or international auto racing series with a Championship decided by the points or positions earned by a driver from multiple races.
Open wheel racing
edit| Series | Driver | Season article |
|---|---|---|
| AIACR European Championship |  Rudolf Caracciola
|
1938 Grand Prix season |
| AAA National Championship |  Floyd Roberts
|
1938 AAA Championship Car season |
Motorcycle
edit| Series | Rider | Season article |
|---|---|---|
| Speedway World Championship |  Bluey Wilkinson
|
1938 Individual Speedway World Championship |
Stock car
edit| Series | Rider | Season article |
|---|---|---|
| Campeonato Argentino de Velocidad |  Ricardo Leopoldo Risatti
|
1938 Campeonato Argentino de Velocidad |