| 1940 motorsport champions | |
| Previous: 1939 | Next: 1941 |
This list of 1940 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 |
|---|---|---|
| AAA National Championship |  Rex Mays
|
1940 AAA Championship Car season |
Stock car racing
edit| Series | Driver | Season article |
|---|---|---|
| Turismo Carretera |  Juan Manuel Fangio
|
1940 Turismo Carretera |