Air racing
| Series | Pilot | refer |
|---|---|---|
| Red Bull Air Race World Series |  Péter Besenyei | 2003 Red Bull Air Race World Series |
| 2003 motorsport champions | |
| Previous: 2002 | Next: 2004 |
This list of 2003 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.
| Series | Pilot | refer |
|---|---|---|
| Red Bull Air Race World Series | Péter Besenyei | 2003 Red Bull Air Race World Series |
| Series | Champion | Refer |
|---|---|---|
| World of Outlaws Sprint Car Series |  Steve Kinser | |
| Teams: Steve Kinser Racing | ||
| Series | Champion | Refer |
|---|---|---|
| NHRA Powerade Drag Racing Series | Top Fuel: Larry Dixon | 2003 NHRA Powerade Drag Racing Series |
| Funny Car: Tony Pedregon | ||
| Pro Stock: Greg Anderson | ||
| Pro Stock Motorcycle: Geno Scali | ||
| Series | Champion | Refer |
|---|---|---|
| D1 Grand Prix |  Youichi Imamura | 2003 D1 Grand Prix season |
| D1NZ |  Jairus Wharerau | 2003 D1NZ season |
| Series | Driver | Season article |
|---|---|---|
| Karting World Championship | FA: Wade Cunningham | |
| CIK-FIA Karting European Championship | FA:  Bas Lammers | |
S-ICC:  Alessandro Manetti | ||
| ICA: Nicola Bocchi | ||
| ICA-J: Nicholas Risitano | ||
| Rotax Max Challenge | MAX:  Cristiano Morgado | |
Junior:  Omar Martin | ||
| Series | Driver | Season article |
|---|---|---|
| FIA European Rallycross Championship | Div 1:  Kenneth Hansen | |
Div 2:  Jaroslav Kalný | ||
1400 Cup:  Guttorm Lindefjell | ||
| British Rallycross Championship |  Dermot Carnegie | |
| Series | Driver | Season article |
|---|---|---|
| European Truck Racing Championship | Super-Race-Trucks:  Gerd Körber | 2003 European Truck Racing Championship |
| Race-Trucks: Lutz Bernau | ||
| Fórmula Truck |  Wellington Cirino | 2003 Fórmula Truck season |
| Teams: ABF Mercedes-Benz | ||
| V8 BRute Racing Series |  Warren Luff | 2003 V8 BRute Racing Series |
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